Be seen, either in the day or at night, with the super-powerful Flux Expert tail light. 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 mile/1.0 kilometer during midday in the summer. Patent-pending reflector mounting system for perfect aim on 27.2, 30.9mm, & 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 & performance to match the fastest road race, adventure, & commuting bikes. Three operating modes: Steady, 25 Lumens Surge, 5-55 Lumens Flash, 55-110 Lumens