Hotshot 100 USB Engineered to stand out day and night, the Hotshot(TM) 100 delivers powerful 100 lumen flashes. Exclusive 2 button design lets you fully adjust the tempo of each flash mode to maximize motorist awareness. Every bit the road cyclist&';s tail light, its power combines with an extra wide beam and up to an incredible 270 hours of run time to give you a large presence anytime and anywhere. (patent pending) Specs: - Powerful 100 lumens flashing - Built-in 24/7 Safety TechnologyA(R) gives you a powerful selection of 6 day and night modes (Steady - Zoom - SteadyPulseA(R) - Triple Flash - DayLightningA(R) - Random Flash) - Freely adjust the brightness of Steady mode and the flash tempo of the flashing modes with the simple 2 button interface (patent pending) - SteadyPulseA(R) mode features a steady beam to help motorists gauge their distance while overlapping pulses keeps them alert at night - DayLightningA(R) mode emits lightning-like flashes to highlight your presence in the brightest of daytime hours - Zoom mode signals those around you with gentle changes in brightness - Enhanced Cycling Optics(TM) expands your presence with an extra wide and long range beam - USB rechargeable internal battery - Low battery indicator - Light mode memory saves the mode you&';re in before the light is turned off - Compact, water resistant design weighs only 59 grams - Seat post and seat stay mounts included - 2:30 ~ 270 hours of run time