CatEye's headlight taillight combo is perfect for around-town commuting. The bright LED is magnified with Cateye's Opticube lens and reflector to produce more than 400 candlepower in a super compact design. The Uno will run up to 60 hrs in flashing mode and up to 15 hrs in constant and features a tool-free mounting bracket that allows for quick attachment to your handlebar. The taillight features five LED's and four modes that maximize your visibility and mounts either horizontally or vertically. Batteries included.