NiteRider Solas 250 Rear Cycling Light

The NiteRiderA(R) Solas(TM) 250 uses two powerful LEDs to produce an amazing 250 lumens of light output. It features 4 modes (2 flash / 2 steady) and is USB rechargeable. We&&';;ve implemented what we call "Group Ride Mode" for cyclists who want to stay visible but not distract others in the pack. 2 flashing and 2 steady modes; Group Ride mode is ideal for cyclists who want to stay visible but not distract others in the pack Easy on/off seatpost strap mount with quick-release tab FL1 Standard IP64 rated to resist water and dust Weight: 2.9 oz. Charge Time and Battery Life: Charge Time: 4 hours High: 7.5 hours Low: 40 hours Flashing: 4 hrs. 30 min. to 6 hrs. 30 min.