evo.com | Specialized Rear Lights > Visable for more than a mile, the Specialized Flux 250R Taillight is super bright and made for long road rides at any time of day. Featuring a low profile and powerful battery that recharges in around two hours, this easy-to-attach seatpost taillight has three modes for all your blinking needs. Massive 1000mAh Battery Recharges via Included Micro USB Cable in 2:15 Hours IPX7 Waterproof Steady High 100 lumens for 3:00 hours Hybrid Spherical Lens and Fresnel Lens Over Three High-Power LEDs to Send Lumens for Mile, or Kilometers Designed to Fit Round and D-Shaped Seatposts | Specialized Flux 250R Taillight 2024 in Black