7LED Bicycle Wheel Valve Tire Tyre Double Sense LED Letter Light Specifiction: Material: ABS, Alloy zinc valve adapter Power supply: 3 x AG10 battery (included). LED Color: Red, Blue Length: About 7.8cm Description: 7 colorful LEDs. Easy and convenient to use. Move-controlled LED sensor, automatically ON / OFF. Only suit for American, British Air Nozzle adapter. Multi Red or Blue English letters and automatically change. Package Includes: 1 X Bicycle Light