These LED Lights made of PC and ABS which durable and strong. Its USB design which you can charge the tail light from your computer, laptop, power bank or any device with a USB port and it is very convenient. And it equipped with that wide range of applications. Feature - Color: Red. - Material: PC and ABS. - Size: 7x2x1.5cm. - 240 degree wide angle visual design provides more visibility than on the market.Whether you’re running,walking with your dog,cycling,skateboarding or hiking,these lights will keep you safe and secure. - Highly airtight constuction,stronger waterproof.These tail lights are water resistant for any weather,extremely durable. - This taillight can be charged by USB cable via computers,chargers or portable power bank.This will save you lots of money on batteries. - Hook onto your ,running gear,reflective vest,backpack,dog collars,harnesses,or anywhere on your clothing.Mount to your bicycle,helmet,skateboard,scooter,stroller, ,or anywhere you can imagine. Package list: 2 x bike lights