Flux™ Expert Taillight

Flux™ Expert Taillight Be seen, either in the day or at night, with the super-powerful Flux™ Expert taillight. The flashing mode automatically boosts the light's output to 110 Lumens during the day for up to 14 hours, while making you visible up to a two thirds-of-a-mile (or one kilometer) in full daylight. Maximum safety, even in the brightest conditions. 110 Lumens output sets new benchmark. Visible up to 0.6 miles/1.0 kilometers during midday in the summer. Patent-pending reflector mounting system for perfect aim on 27.2, 30.9mm, and Venge seatposts. Ambient light sensor boosts light output by 50% while in Flash Mode during daytime running, for increased visibility. Integrated, flip-out USB tab to charge rechargeable Li-Ion battery in any USB port in under 90 minutes. All the aesthetics and performance to match the fastest road race, adventure, and commuting bikes. Three operating modes: Steady, 25 Lumens, Surge, 5-55 Lumens, Flash, 55-110 Lumens