Fenix E05R Keychain Flashlight

Max Lumens: 400
Modes: 4
Battery: Built-in
(26 customer reviews)



The Fenix E05R Keychain Flashlight is a great flashlight to carry every day. Less than 3″ long and less than 1″ round, this flashlight only weighs 0.85 ounces (24g) making it a light weight option for your keys, pocket or purse. Four brightness levels are accessed by pressing the side switch, and when you need extra power, hold the switch down for a quick burst of a very bright 400 lumens. The built-in battery can be quickly charged by unscrewing the head to reveal the micro-USB charging port. Built for any situation, the Fenix E05R Keychain Flashlight is built tough, making it impact resistant, dustproof and waterproof. Trust this mini flashlight for your every day needs.

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: 400
Modes: 4


Fenix E05R Size

Length: 2.68” (68mm)
Head: 0.60” (15.3mm)
Body: 0.59” (15mm)

Fenix E05R Weight

0.85 oz. (24g) including battery

Fenix E05R Battery Type

Built-in rechargeable 320mAh Li-polymer battery


Micro USB charging cable, key chain, spare O-ring


Limited Lifetime Guarantee from Fenix Lighting USA

fenix e05r keychain flashlight specs
fenix e05r keychain flashlight runtime

Additional Features of the Fenix E05R Keychain Flashlight

  • Luminus SST20 Cold White LED with a lifespan of 50,000 hours.
  • Built-in 320mAh Li-polymer battery.
  • Hidden micro USB charging port.
  • Metal switch for on/off and output selection.
  • Instant Burst.
  • High-efficiency lens with a total reflective coating.
  • Made of durable A6061-T6 aluminum.
  • Premium type HAIII hard-anodized anti-abrasive finish.

Operating Instructions for the Fenix E05R Keychain Flashlight


  • Press and hold the side switch for 0.5 seconds to turn on/off the light.

Output Selection

  • With the light switched on, single click the side switch to cycle through Low→Med→High.

Instant Burst

  • Press and hold the side switch for 1.2 seconds to enter instant Burst, release it the light will turn back to Low mode.

Lock: with the light switched off, double click the switch within 0.5 seconds to lock the light, the light will blink twice on Low to indicate locked status.

Unlock: with the light locked, double click the switch within 0.5 seconds, 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 the Fenix E05R Keychain Flashlight

  1. First loosen the light body to reveal the Micro USB charging port and plug the USB A socket of the charging cable into an electrical outlet, then connect the micro USB socket of the charging cable to the light.
  2. The indicator will display red while charging and will turn green when fully charged.
  3. Once charging is completed, be sure to tighten the light head to maintain the dustproof and waterproof ability.


  1. Charge the light timely when the battery power gets too low to ensure the normal life of the battery.
  2. The normal charging time is approximately 1 hour from depletion to full charging.
  3. Recharge a stored light every four months to maintain the optimum performance of the battery.

Intelligent Overheat Protection
The light will accumulate a lot of heat when used at High mode for extended periods. When the light reaches a temperature of 60°C or above, the light will automatically step down a few lumens to reduce the temperature. When the temperature drops below 60°C, it will then allow the user for the reselection of the mode.

Usage and Maintenance

  • Disassembling the sealed head can cause damage to the light and will void the warranty.
  • Lock the light to prevent accidental activation during storage or transportation.
  • Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.


  • The flashlight is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the light directly into anyone’s eyes.
  • This flashlight will accumulate a lot of heat when used for extended periods, resulting in a high temperature of the flashlights hell. Pay attention to safe use to avoid scalding.
  • Do not shine an object at close range, to avoid burning the object or causing danger due to high temperature.
  • The LED of this flashlight is not replaceable; so the entire light should be replaced when the LED reaches the end of its life.
  • If any of the information provided in this manual is changed, the new version of the manual shall prevail; if your included user manual is an old one, it acquiesces that we won’t send a new manual.

26 reviews for Fenix E05R Keychain Flashlight

Based on 26 reviews
  1. Michael Richardson (verified owner)

    This light is tiny, triple AAA Size. Though I don’t know what battery it has in it. but it’s a great Carry for my daughter because if she lost it. It won’t break the bank. I really like the swivel threaded micro usb access cover it’s a nice feature I wish my large fenix had. It’s got a o ring seal. I’m not sure it’s water proof but if it’s closed it’s unlikely to get dust or moisture in it. It’s has 3 brightness settings and functions well. I don’t see any way to remove and replace the battery. But it’s inexpensive enough to just recycle after the tons of charges it can probably take if it’s anything like my other fenix. You’ll probably lose it first before that happens.

    (0) (0)
    • Dianne (store manager)

      Hi Michael – the E05R is IP68 rated – dustproof and submersible underwater to 2 m.

  2. Rick B. (verified owner)

    Purchased the Green. The copper looking switch adds just the right touch for looks. 3 light modes. It’s bright. Charging port hidden just below the switch. Love this light.

    (0) (0)
  3. Shannon K. (verified owner)

    I am really enjoying this little flashlight from Fenix. I got mine in the brown/copper color and it’s beautiful. All the machining and knurling on the light is very well done. And the anodizing is flawless. I really like the twisting section of the flashlight that exposes the charging port. It’s very smooth and makes charging the flashlight nice and easy. I also find all the different lumen levels to be useful on this light. The beam pattern is quite large and extremely smooth throughout. The color temperature is also very pleasing to the eye and leans towards a “warmish” neutral white (probably what I like most about this light). It does not have any of the “cheap” bluish or purple tents to it that some other lights tend to have. I do kind of miss having a pocket clip, but that’s definitely not a deal-breaker with this light. The one thing that is somewhat irritating… When pressing and holding the button to achieve turbo mode, the light goes back to the low mode instead of turning off, after releasing the button (which is not very common in the industry). I find myself forgetting this and walking around with the light on low mode before noticing it, thus, wearing down my battery. This is definitely not a deal breaker either, because everything else about the light is so good. I hope to get another one of these in the green color soon. Happy flashlighting.

    (1) (0)
    • Dianne (store manager)

      Hi Shannon – so yes, to access the burst mode, the instructions say “Press and hold the side switch for 1.2 seconds to enter instant Burst, release it the light will turn back to Low mode.” You would then need to press the button again for .5 seconds to turn off the light.

  4. Alexander R. (verified owner)

    I love this thing. It’s pocket sized yet it’s way brighter than some of the bigger lights I’ve used in the past! Fenix, you guys rock‼️

    (2) (0)
  5. William W. (verified owner)

    Compact and lightweight but plenty of light. Easy to charge.

    (0) (0)
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