GUARANTEED TO MAXIMIZE YOUR VISIBILITY AND COMMAND DRIVERS ATTENTION WITH A BOLD LED BIKE REAR LIGHTThe Best LED Bike Light Set to keep you safe from the Rear- Mounts in Back quickly with no tools- Highest quality Aircraft Aluminum used- Stays locked in place- Excellent ON/OFF - so is ON only when you NEED it ON- Extremely bright light- ensures you have a brilliant, long and safe rideWHAT IS INCLUDED IN THE BOX?REAR LIGHT:- Extremely bright LED light- Waterproof opp bag!- Bike Stem clamping system - No tools required- 3 Light settings - BRIGHT, FLASH FAST, FLASH SLOW- 2 CR2032 batteries INCLUDED