The Fenix E05R flashlight is a rechargeable mini flashlight that can emit up to 400 lumens from its built-in 320mAh Li-polymer battery. Fully rechargeable via a built-in micro USB charging port, the flashlight has a maximum runtime of 30 hours. This little flashlight is built tough with an IP68 dustproof and waterproof rating. Super small and compact, this keychain flashlight is a great choice for everyday carry.