Smart Lunar R1 Rear Light 1 Watt

The brightest rear light on the planet just got even brighter
Visible from up to 1 mile with a single 1 Watt Japanese LED & 2 further LEDs
Constant , flashing modes and new group rider mode
Up to 50 hours run time using 2AAA batteries
Mounts to belt clip, seat post or seat stay
Tough construction withstands extreme weather conditions
Limited lifetime warranty
Batteries included