Fenix E03R Keychain Flashlight

Max Lumens: 260
Modes: 6
(124 customer reviews)

$37.00 $26.95

The Fenix E03R rechargeable keychain flashlight will produce a maximum 260 lumens and throw the light a distance of 138ft (42m). The top switch operates on/off and allows you to select from six lighting modes, including four brightness levels plus red light and red flashing. The battery level indicator lets you know when the battery needs charging. Quickly recharge the built-in battery via the USB Type-C charging port. At less than 2″ long, not only is it the perfect everyday carry size, but it is rugged too with an IP66 rated splashproof and dustproof rating. Keep this light on your keys, in a pocket, or in a drawer to always have a flashlight at your fingertips. The E03R would even make a great gift that person in your life that you know should have a bright light handy at all times, but that you can’t convince to carry a full sized flashlight. Astonishingly bright for its small size, we know the Fenix E03R will become an instant favorite keychain flashlight.

For commercial orders and large purchases, contact us at (888) 775-9996 x6, or
WARNING. Be aware of counterfeit Fenix merchandise in the U.S. marketplace.

Max Lumens: 260
Modes: 6


E03R spec sheet

E03R Size:

Length: 1.85” (47mm)
Width: 0.94” (24mm)
Height: 0.47” (12mm)

E03R Weight:

0.78 oz. (22g) including battery

E03R Battery:

Built-in 200mAh Li-polymer battery


Key chain, USB Type-C charging cable
Please note: The E03R DOES include a USB Type-C charging cable for orders after 8/20/20.


Limited Lifetime Guarantee from Fenix Lighting USA

Additional Features of the Fenix E03R Keychain Flashlight

  • MATCH CA18 white light LED and Everlight 2835 red light LED, with a lifespan of 50,000 hours.
  • Built-in 200mAh Li-polymer battery.
  • Battery level indication and low-voltage warning.
  • Intelligent overheat protection against high surface temperature.
  • All-metal CNC machining light body.
  • Premium type HAIII hard-anodized anti-abrasive finish.
  • Recessed switch and lockout function.

Operating Instructions of the Fenix E03R Keychain Flashlight

Press and hold the switch for 0.5 seconds to turn on/off the light.
Press and hold the switch for 1.2 seconds to turn on the red light.

Output Selection for Keychain Flashlight
White light: single click the switch to cycle through Eco→Low→Med→High.
Red light: single click the switch to cycle through Red→Red Flash.

Lock: with the light switched off, double click the switch to lock the light, the light will blink twice on Low to indicate locked status.
Unlock: with the light locked, double click the switch, the light will be unlocked and activated on Low.
In locked status, clicking or pressing the switch will activate 2 one-second blinks on Low to indicate locked status.

Charging Your Keychain Flashlight

  1. First switch off the light and plug the USB A socket of the charging cable into an electrical outlet, then connect the USB Type-C socket of the charging cable to the light.
  2. The indicator will display red while charging, and will turn to green when fully charged.
  3. Once charging is completed, be sure to close the anti-dust cover.


  1. The normal charging time is approximately 1 hour and 20 minutes from depletion to full charging.
  2. Recharge a stored light every four months to maintain optimum performance of the battery.

Battery Level Indication
With the light switched off, single click the switch to check the battery status. The battery level indicator will display the battery status for 3 seconds.

  • Green constant on: saturated (100% – 70%)
  • Green flashes: sufficient (70% – 40%)
  • Red constant on: poor (40% – 10%)
  • Red flashes (2Hz): critical (10% – 1%)

Note: The battery status will be displayed each time the light is switched on.

Intelligent Protection
The light will accumulate a lot of heat when used on High output level for extended periods. To reduce the temperature, the light will automatically step down a few lumens. High output level can be reselected if needed.

Low-voltage Warning
When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Eco output is reached. When this happens on Eco output mode, the battery level indicator blinks red to remind you to recharge the battery. To ensure normal use, the flashlight will not turn off automatically and will work till the battery is depleted.

Usage and Maintenance

  • Fully charge the light in time to ensure normal use next time.
  • Recharge a stored light every four months to maintain optimum performance of the battery.
  • Once charging is completed, be sure to close the anti-dust cover.


  • This flashlight is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the flashlight directly into anyone’s eyes.
  • All information provided in this manual is subject to change without prior notice.

124 reviews for Fenix E03R Keychain Flashlight

  1. Ronald (verified owner)

    Very small and compact fob. Functions as expected. I purchased six for my family as Christmas gifts. I look forward for long reliable service for all.

  2. Eric G. (verified owner)

    Great little EDC keychain light. Everything you need is in the box since a USB-C cable is now included.

  3. Robert R. (verified owner)

    Excellent quality; same for Features.

  4. Jeff Ebersole (verified owner)

    Like the design, rechargeability and IP66. so does the family

  5. Gerald C. (verified owner)

    The perfect stocking stuffer.

  6. Elliott Tran (verified owner)

    I love these. Purchased three of them. I love the red light also. One solid body flashlight, it’s very well-made. I no longer am afraid of using keychain flashlight because these are rechargeable The charge cover is a bit hard to put back, but that’s somewhat expected for a very small flashlight. The flashlight lock though is too easy to unlock with double clicking. I found my flashlight turned on by itself in my pocket even though they were locked.

  7. Ralph Kitchens (verified owner)

    Liked it so much I purchased 12 of these as gifts.

  8. Tomasz P. (verified owner)


  9. Carl (verified owner)

    It is amazingly small. I really need to add a string or something to the ring so I can manipulate it with my fingers and find it in my pocket. Also, I think a different texture or surface on the opposite side of the switch will facilitate my finding the switch easier. I am still learning the push sequence to operate the light. I am happy with it though.

  10. Eric (verified owner)

    Great little flashlight for my keychain. Size is similar to a normal house key, and much brighter than my cell phone light.

  11. Marcel (verified owner)

    Great little light! Much better than the o-light it is replacing.

  12. Daniel Seigel (verified owner)

    Good Light: Small Size: Comment: White light should go on first before strobe or red light

  13. David A. (verified owner)

    I like carrying this tiny flashlight on my keyring. It provides adequate light.
    Unfortunately I’ve experienced two times where somehow it activated in my pocket

    • Dianne

      Are you using the lock function?

      Lock: with the light switched off, double click the switch to lock the light, the light will blink twice on Low to indicate locked status.
      Unlock: with the light locked, double click the switch, the light will be unlocked and activated on Low.
      In locked status, clicking or pressing the switch will activate 2 one-second blinks on Low to indicate locked status.

  14. Bradley (verified owner)

    This light looks well made and is a handy size. It is a gift that has not been given yet so I can not speak to how well it preforms yet.

  15. Bruce Nowak (verified owner)

    Ordering was efficient and easy, delivery was fast and the mini light works better than expected. Quite a powerful beam from such a small fixture.

  16. Jeff Hendrix (verified owner)

    It’s not keeping a charge as long as I thought it would. I don’t know if it’s because it’s turning on while in my pocket and I don’t know it. I always make sure it’s locked. It’s been disappointing especially when I need it and suddenly it’s dead.

    • Dianne

      Hi Jeff – I will have warranty reach out to you to see if that light has a bad battery. If it was turning on in your pocket you will feel some heat off the light.

  17. TODD (verified owner)

    As usual. Another quality product from Fenix. It is the only brand that I will purchase.

  18. Gary Johnson (verified owner)

    Great keychain light. Have one on everyone of my chains.

  19. Charles Thomka (verified owner)

    it works, it is small, okeeeeey

  20. Douglas L. (verified owner)

    Unlocks itself and runs CB battery down while in pants pocket

    • Dianne

      I’m not sure how the light would unlock itself in a pocket as the lock/unlock function requires a quick double click of the button. If the lock function is not locking the light, please contact warranty.

  21. Dwain C. (verified owner)

    Good quality product for it’s size. Appreciate the different light settings. Gives sufficient light to get you around those dark places without being bulky. Like the fact you can recharge the built in battery. Overall satisfied with my purchase.

  22. James M. (verified owner)

    More bells and whistles than I will ever use but seems to be an extremely well made and amazingly powerful little light for only $26.95.

  23. Michael MAHFOUZ (verified owner)

    Incredibly bright light

  24. Michael Messmann (verified owner)

    Crazy bright. Smaller than expected. Great fit/finish.
    A little complicated controls to be learned but worth it for all the features (lock out, red, varying white brightness all through one button).

  25. Joseph (verified owner)

    Awesome👍 Read the Manual for its special features😊

  26. David (verified owner)

    Great Keychain size!

  27. Frank (verified owner)

    I’ve never used the little watch pocket on my jeans but this flashlight tucks in there nicely. While it’s small, it is well designed. It fits into your hand w/o covering the light. Lots of great features. My favorites, besides its size, are the lock-out and that it’s rechargeable.

  28. Anonymous (verified owner)

    For some reason small key chain lighting systems have rarely met my needs or, if they did, would disappear from the market because of some sort of business failing. A lot of rechargeable keychain lights used non-rechargeable batteries, had limited power management, often came on in your pocket leading to comments like “I guess you’re glad to see me….” On the other hand the keychain light that had the best of both worlds would ultimately fail because they were bought by their competitors and taken off the market. The E03R is a little light that does a lot. It is durable, rechargeable, has variable brightness control, and a “bright”, actually usable, ‘red’ mode – excellent for night work when you want to preserve whatever night-vision you have. If I had a complaint it would be the light doesn’t go directly ‘red’ without going through the white light phase. This is a minor complaint and this is easy to work around. For the price it is a great gift idea. Especially for old goats, like me, who sometimes struggle to read the bar tab in low light. Based on experience, I would buy several just in case some ‘smart’ manager at Fenix decides to discontinue the E03R and replace it with a 12000 lumen headlamp.

  29. Joseph S. (verified owner)

    Small, bright and light weight. Gave these as gifts and they love them, so now I will have to buy more. I will keep one for myself next time!

  30. Daniel E. (verified owner)

    A great little light. Well made and plenty bright!
    Fenix never disappoints!

  31. Manuel (verified owner)

    I am Happy with unit I needed light a few days later looking for something in my car glad I purchased worked great and is easy to carry don’t think about it just buy it you will be happy

  32. Jeremiah Y. (verified owner)

    I am very pleased with my purchase! My E03R has already on my key chain and has come in handy, when I needed it. It’s exceeded my expectations and will always be part of my EDC. My wife likes the convenience of the E03R, instead of having to rely on her iPhone flashlight. It looks like I will be making another purchase soon!

  33. Guy T. (verified owner)

    Wife now carries a light – it was a battle but this light is one that is fashionable and effective enough for her to carry. Great job Fenix!

  34. Jason C. (verified owner)

    Great little convenient light. Highly recommend!

  35. Anonymous (verified owner)

    Fenix quality, can’t beat it!

  36. Thomas (verified owner)

    This flashlight is small and bright – just what I wanted.

  37. Erich E. (verified owner)

    Crazy bright for how tiny it is. Multiple settings are great.

  38. Jeff E. (verified owner)

    I picked up a one of these, and ended up buying a second one for a family member too. This light is AMAZINGLY tiny…small enough that I actually keep this light in my pocket all of the time and often forget that it’s there LOL. The brightness is impressive, and I’ve found the red light to be extremely useful when trying to navigate at night without blowing up my night vision or waking up my wife or dog. There are times when I wish it had a direct to turbo mode and direct to red mode (it quickly flashes past the low-white setting to get to red), but the trade-off of it’s size, thin shape, and battery life are totally worth it. I highly recommend this as an EDC or keychain light!

  39. Ian W. (verified owner)

    Ok…. this light is small, REALLY small. I could put it inside a tic tac box and still have room to spare! The C-type charger is super convenient, and allows for a pretty fast charge. But the 260 lumens that this bad boy kicks out is the real show stopper! So put your phones away… the E03R has a lot of light for such a small package, and more than enough for whatever situation you might need it for. The lock function is also greatly appreciated to avoid those pesky accidental turn ons that can drain your battery life and leave you high and battery-dry at the worst times! Never be without a light anymore, throw the E03R on your keychain and have a little peace of mind!

  40. Anonymous (verified owner)

    Awesome little backup light to have on your Keychain, in your car or backpack

  41. Robert K. (verified owner)

    Nice little key chain light, even smaller than it looks

  42. brad b. (verified owner)

    Wow – it’s nice and small and very easy to operate. The rechargeable battery make is super handy to keep the light charged up.

  43. JIMMY (verified owner)


  44. Jason C. (verified owner)

    Nice and small and convenient to store places

  45. Tim Reynolds (verified owner)

    So far so good.

  46. Timothy (verified owner)

    I bought three of these as gifts for friends & family that don’t have good flashlights at hand. All of them had needed it within one day and thanked me for it the next day.

    Tiny & perfect for those that don’t want to maintain a bigger flashlight, but in no way is it lacking.

  47. Russell (verified owner)

    great value

  48. Timothy B. (verified owner)

    Perfect to attach to my briefcase and key chain. Liked it enough to buy two. Well constructed and works well.

  49. Kenneth K. (verified owner)

    Best little light for the money

  50. Jaime A. (verified owner)

    Great little light that you can carry with you all the time, comes in really handy

  51. michael l. (verified owner)

    Great light. Love the lock feature. my other light kept turning on and battery dying.

  52. Marty F. (verified owner)

    Another great product from fenix

  53. THOMAS ESKRIDGE (verified owner)

    carry it on my key chain love it!

  54. Steve T. (verified owner)

    This is a great little light. Its my second EDC Great to know I have a light handy when I need it.

  55. Robert K. (verified owner)

    very happy with this light very strong and red light nice also

  56. Ronald W. (verified owner)

    Great little key chain light

  57. BEN (verified owner)

    Very good light works exceptionally well – can be used in many different applications

  58. Gary Johnson (verified owner)

    Excellent light! Just the right amount of power for a keychain light, providing a very good selection of run times vs brightness. It has one of the best user interfaces of any light I have owned. It is logical and complete. Charge level is easy to check. The locking feature is easy to activate and deactivate as needed.

  59. Dan (verified owner)

    I am very happy with my purchase . I can’t believe how bright this light is. Its great. I am disappointed that I was charged $5 shipping when your web site clearly states “free Shipping”. I complained about this and got no satisfaction.

    • Dianne

      We have free shipping for orders over $25.

  60. Bill B. (verified owner)

    Good performance and handy size. First keychain light I’ve seen that’s rechargeable.

  61. Anonymous (verified owner)

    Extremely powerful for its small size. Seems to hold a charge well. So far the excellent!

  62. Steven (verified owner)

    So much light from a small package! Very light weight

  63. Daniel Seigel (verified owner)

    Haven’t really used it yet…..but I’m sure it will work great. It’s on my key chain.

  64. James Gallagher (verified owner)

    A great compact torch, my new favorite. Brighter at its highest setting than the (many) others I’ve owned at this size and with a solid metal body that feels like it can take the rough-and-tumble of everyday use. I like the red low-light option as will.
    One suggestion to consider for future version: a triple-click strobe would be a nice addition.

  65. James J (verified owner)

    Spent more money on a Nebo when they first came out. Died shortly after and the finish wore off quickly.
    I like the Fenix design better and it is easier to use. USB Type-C is a wonderful touch. So far the sharper edges are wearing slightly but it takes a beating on my key ring. The charging cover is easy to remove and the flush button keeps it from accidently turning on even without the lock on. Needs to be able to go directly to red if your using it on and off in the dark. Much quicker to get to than my phone flashlight.

    • Dianne

      We have mentioned to the factory that it would be nice to have lights be able to go directly to red.

  66. Benjamin Miller (verified owner)

    Great device, holds charge well, small but might!

  67. Jan (verified owner)

    Great Little lite it meets all my expectations.

  68. Jason C. (verified owner)

    Bought 3

  69. Charles J. (verified owner)

    Nice little flashlight; very bright with many options for its size. Going to buy several for gifts.

  70. Rene Dorado (verified owner)

    Light was for my wife. She loves that it rechargeable small fits great in purse.

  71. Rob (verified owner)

    Bright little light! And not bulky on my key chain. 👍🏻

  72. Brian P. (verified owner)

    Great little light. Very bright. Rechargeabl too.

  73. Phillip (verified owner)

    Awesome little flashlight, I bought my wife one and liked it so much that I bought myself one😁

  74. Jean Francois (verified owner)

    Excellent little light. The convenience of USB C, the small form factor and the reasonable lume levels are great. The low level (5 lumens) is enough to navigate the house at night, and the red light is a great addition if you need to minimize disruptions. Haven’t tried it outdoors yet, but should be enough as a keychain light.

  75. Patrick D. (verified owner)

    Not as bright as I thought it was going to be. Also, having to buy a separate charging cable makes it cost prohibitive.

  76. Terri M. (verified owner)

    This little flashlight is great in size for a key chain and powerful in light. It also has the capability to brighten up or down as needed. Great for menus too!

  77. Michael T. (verified owner)

    A great flashlight at a terrific price!

  78. Brannan (verified owner)

    I keep this flashlight on my key chain and absolutely love it. Incredibly bright white LED, less bright but awesome additional red LED. USB-C charging is a huge plus. My only complaint after carrying it every day for about three weeks, is that the gray finish is starting to wear off on the edges of the light. It is on a keychain with metal keys, which is a given for a keychain light. I don’t expect the finish to last very long at all, but I’m okay with that. The purpose of gear isn’t to look nice, it’s to be functional. I would definitely recommend this light to someone who wants a well designed, high output light in a tiny form factor.

  79. John S. (verified owner)

    Wow I was really amazed at how bright and how far this lil tiny lightweight light shines. Even the red light puts out good usable light. The battery lasts pretty long too i used alot n havent had to recharge yet. Another winner ! Fenix never lets me down! Ive just got to say ive never once had buyers remorse with a fenix light. Awesome company awesome light.

  80. Anonymous (verified owner)

    This is a perfect pocket carry light. Love the brightness, battery and size. Great quality!

  81. Barry Oneal (verified owner)

    Nice for keychain

  82. Douglas W. (verified owner)

    First of all, shipping was fast. The flashlight itself is one solid block of metal, which feels extremely solid and well made. I really like how the light always cycles from low to high, and activating the red light is very easy. These two features help preserve night vision. Battery life is pretty decent I only had to charge it twice, including the initial charge, since I’ve got it 2 weeks ago.
    I highly recommend it for aviation use. I just wish they make a wrist band for it so I can wear it like a watch. Fenix, hope you are reading this!!!!

    • Dianne

      I will pass that along!

  83. John Mathis (verified owner)

    Little light big on features. Super bright very handy. I really like it, thinking of buying more for gifts.

  84. Steven S. (verified owner)

    Best light yet! Fits in my pocket perfect. Very bright. Good battery life.

  85. Steven Leccese (verified owner)

    This Fenix Keychain Light is the brightest keychain light I’ve ever used. It’s so bright it could light up a whole room inside your house. I highly recommend it.

  86. Mars Crain (verified owner)

    So tiny, yet so powerful. Very nice and handy flashlight. Highly recommend it.

  87. Douglas M. (verified owner)

    Great little light

  88. Seth (verified owner)

    Great flashlight for your key chain. Showed my brother and he wanted one.

  89. Don DeLucia (verified owner)

    Perfect keychain light that won’t blind you or get extremely overheated. Works great in an in-car environment if you’re looking for something.

  90. James G. (verified owner)

    Small and bright.

  91. Jonathan (verified owner)

    Great little torch I love it

  92. Mark Emery (verified owner)

    Excellent product

  93. (verified owner)

    Absolutely love this little light. So much brighter than any phone light, it’s tiny, and lots of nice little features. Plus it charges with USB-C, the same cord and adapter as many other electronics.

  94. Shawn Cohen (verified owner)

    This is an awsome light. Finally one that doesn’t screw on in my pocket

  95. Bryan M. (verified owner)

    Excellent product! The light output is excellent for such a small package and great to have the red light too. The build quality is superb with nice touches such as battery level indicator.

  96. John M. (verified owner)

    Nice little rechargeable light.

  97. James w. (verified owner)

    Awesome! You guy’s make great lights. For such a little light it puts out a bright beam. I love my headlamp as well, great when I’m working on my car, and exploring in my backyard.

  98. David (verified owner)

    So far so good. This light is perfect for a daily user that I can carry in my pocket. I am a property manager and use it daily for different tasks.

  99. Reuben S. (verified owner)

    Way smaller, way brighter than expected. I was expecting a flashlight that was approximately the size of the keyfob for my vehicle, but it’s actually about half the size. What a pleasant surprise. I’ve carried it around with me for about a month now, and unlike other reviewers, I haven’t yet had the light turn on by accident.

    It charges with USB-C port, which is perfect.

    I took a few photos to show how much brighter this is than the LED light on my phone, but it really wasn’t a fair comparison. It’s in a completely different class of light. As a home inspector, I was turned on to the 258 lumen Fenix TK11 back around 2008 or so, and I thought it was the greatest thing ever, compared to the huge flashlights that I used to use. I’ve moved on to bigger and better flashlights since then, but I still have my TK11, so I pulled it out of retirement to take some comparison images with the EO3R. This tiny little keychain light kicked the butt of what used to be my primary work light!

    This would make for an awesome stocking stuffer.

  100. Ryan (verified owner)

    Freaking love this!! Best keychain light Ever! JUST BUY IT!!!!

  101. Thomas H. (verified owner)

    The flashlight itself is great. My problem is that I can’t use it for my intended purpose. I added the light to my keychain, but in my pocket the light unknowingly would be activated. When I needed to use it, I couldn’t.

    • Dianne

      Please note this light does have a lock/unlock feature on it that will quickly unlock the light and immediately put it into low mode:

      Lock: with the light switched off, double click the switch to lock the light, the light will blink twice on Low to indicate locked status.
      Unlock: with the light locked, double click the switch, the light will be unlocked and activated on Low.
      In locked status, clicking or pressing the switch will activate 2 one-second blinks on Low to indicate locked status.

  102. Anonymous (verified owner)

    sounds silly but its actually too large for my keyring

  103. Mark (verified owner)

    Great little keychain light. High quality solid construction. Good range of brightness settings. Red night vision light is also a plus.

  104. Gail Bengard (verified owner)

    A must get for anyone that needs a quick light when locking the office up, looking for keys, finding what you dropped or even looking for an owl in a tree. This is a very powerful tool to have at your reach. I put a hook near my bed so I can always find a light at night. I also ordered extras… a super great gift to have on hand.

  105. Risa (verified owner)

    This flashlight is the right size and built very well. So far it’s been great.

  106. Dane (verified owner)

    Very bright light from a very small form factor. Definitely love the option for the red light.

  107. William (verified owner)

    This flashlight is awesome – incredibly small and super bright!

  108. Vincent Lambres (verified owner)

    Great Product

  109. Glenn P. (verified owner)

    Bright for its size. I bought 3 and I love it, my kids like it especially at night they use the red blinking light .

  110. Anonymous (verified owner)

    Love it, bought two. Pretty bright, but mostly in love with USB-C charging, extremely useful.

  111. Jason (verified owner)

    Nice light throw at compact size

  112. Christopher Amson (verified owner)

    I like the solid feel of the metal case.

  113. Eric (verified owner)

    Perfect little light, got a home on my keychain and helps out alot better than a cell phone light

  114. Edid ROSALES (verified owner)


  115. Paul H. (verified owner)

    I think this is the brightest little keychain light I ever had! I have an Olight i1r 2 eos and that is very bright too but the fenix is brighter. Cool light love that it can charge up all in all would recommend!

  116. Matt B. (verified owner)

    awesome light great for the keychain

  117. David A. (verified owner)

    Nice, small, great feel, good light

  118. Keith (verified owner)

    Awesome light in a compact size.

  119. william O. (verified owner)

    Perfect, and I mean perfect replacement for my old keychain light.

  120. Richard S. (verified owner)

    great little light

  121. Aaron (verified owner)

    This light is awesome. I love the fact that it is USB-C. I can top it off with my phone charger. I also love the fact that it is dual LED. The red LED is perfect when you need light but don’t want to ruin your night vision. The construction is also very well built and robust. 10/10 would buy again.

  122. Jay

    This would be perfect IF you included a clip to attach this to a hat brim.

  123. Rick

    Received mine last week and I love it!. Super light and bright. It blows away the prior AAA light I was using at a fraction of the weight and size. It’s so small and light you won’t notice it on your key chain. The red light is a nice addition for reading in the car or in a darkened place where a white light would attract attention. Construction and finish is top-notch. I’m not sure what happens when the battery stops taking a charge but hopefully that’s a long way off.

  124. Joshua Madrid

    Hurry up and release this flashlight we need a USB type c keychaib light asap! Can’t wait

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