The Fenix E02R has a powerful 200-lumen output and rechargeable 120mAh Li-polymer battery with a compact 1.8" aluminum body. Why is the E02R so unique compared to other Fenix compact lights? The E02R can be easily be carried on your keychain because of its unique keychain loop. You can also activate the E02R keychain light quickly with the twist head and the anti-slip tail prevents the light from falling out of your hand. Other key features include the CREE XP-G2 LED with a lifespan of 50,000 hours and a micro USB port for fast charging.