SMALL AND LIGHTWEIGHT, this rear light provides a simple solution for low-light riding. Small, bright, water-resistant, and easy to mount, its ideal for those who just want to be seen without the frills of an expensive light.4 LIGHT MODES Three flash modes and solid light are easily visible when riding. Five LEDS provide approximately 15 lumens brightness for between 4-12hrs of use.EASY TO INSTALL elastic bands let you mount the light onto various shaped objects and handlebars of most sizes. Place on the back of your helmet, backpack or other placesUSB RECHARGEABLE Easy to recharge via micro USB port on rear (cable included).WATERPROOF SEAL Suitable for use in wet weather, mountain biking, off-roading