AOR POWER #AR127 Multicolor Bicycle Tire Valve Stem LED Cap Lights, Bike Wheel Lights, 2-Pack An eye-catching and fun way to make your cycle or bike even more visible to motorists Made of corrosion resistant and lightweight plastic for safety reasons - will break if bent Powered by three AG10 batteries per light (batteries included) The 5 LED Bike Wheel LEDs are activated by the wheels when they are in motion. Super Bright Multi-Colored 5 LED lamps help keep safe while biking at night