Bike Bicycle Led Safety Warning Front Rear Light Lamps Waterproof Cycling 3 Modes Description: 100% brand new and high quality. Easy to install. Compact convenient to carry. Strong brightness a great accessory to ensure your safety when riding at night. Material:Aluminum alloy + electronic components + silicon. Light color:Red/Blue/White. Color:Silver/Black/Blue/Red. 3 modes of light:Full light Slow flash and quick flash. Powered by:2 x CR2032 batteries(included). Diameter of lamp holder:2cm. Length of silicone belt:9.8 cm. Light color:Black and Red body colors' light color is:Red Blue body color the light color is Blue