The Fenix BC05R is a rechargeable bike taillight built for the cycling commuter. Be seen in traffic with its 10 lumen red light or 2 lumen flashlight red light. The built-in 240mAh Li-polymer battery delivers a maximum 72 hours of runtime (in fast flash mode), which will last a month if you commute 2 hours a day. Quickly charge the BC05R via the Type-C interface. With the included body clip, you can also use the taillight as a headlamp, chest lamp or backpack light. Rated IP66 rain proof and dustproof, this bike taillight will help make your bicycle commute much safer.