NTJ 1 Pair LED Motion Activated Bike Bicycle Wheel Valve Stem Cap Tire Light (4 colors to choose from)
Name: Bicycle Valve LightMaterial: Plastic/metalRace Speed: 10km/HourLength: 6.25cmUsage: wheel LED LightSetup: simply screw on your tire valve stemValve Cap: American Standard / European Standard SupportedCircuit: Independent Circuit Design, Light control circuit, sensor circuit, LED circuitPower by: 3*AG10cell batteries (include)