Packed with more power and technology than meets the eye, the new Dice(TM) TL 50 tail light is engineered to stand out day and night, delivering powerful and extra-wide 50 lumen flashes. Engineered for road cyclists and commuters, its extra-wide beam maximizes your presence from afar while its low-profile flexible mount keeps secure on the seat post, including aero shapes. It even senses day and night, automatically switching to the optimal flash tempo. (Patent Pending) - Powerful 50 lumen flashes with 8 light modes - Built-in 24/7 Safety Technology(R) gives you a powerful selection of night and day modes: Day Modes: High - Group - SteadyPulse(R) Day - Single Flash Day - Triple Flash Day, Night Modes: High - Group - SteadyPulse(R) Night - Single Flash Night - Triple Flash Night - Flashing modes emit powerful lightning-like flashes to highlight your presence in broad daylight - SteadyPulse(R) mode features a steady beam to help motorists gauge their distance while overlapping pulses keep them alert at night - Enhanced Cycling Optics(TM) (ECO) expands your presence from afar with an extra-wide and long-range beam - USB rechargeable Li-ion battery - Low battery indicator - Light mode memory saves the mode you're in before the light is turned off - Low profile, water-resistant design only weighs 30 grams - Flexible mount conveniently attaches to most seat posts including aero styles RUN TIMES - High: 1:30 hrs - Group: 65 hrs - Single Flash Night: 11 hrs - Single Flash Day: 20 hrs - Triple Flash Night: 35 hr - Triple Flash Day: 55 hrs - SteadyPulse(R) Night: 6:30 hrs - SteadyPulse(R) Day: 8 hrs - CHARGE TIME: 2 hrs - MOUNTING: Seat Post - BATTERY: Built-in Li-ion - SYSTEM WEIGHT: 30g Patent pending. *Features and specs are subject to change without notice.