The NiteRider Sentinel 250 incorporates three powerful LEDs to produce a powerful daylight visible, 250 lumens 7 modes including 2 brightness settings, 2 flash, and 3 settings with projected laser lanes Custom reflector provides maximum daylight visibility Easy to use rubber strap attachment with quick release tab Black 7 Rear Rubber Strap USB 250UPC/EAN/GTIN: 702699050891