* Lightweight and simple USB rechargeable light* Durable aluminum shell* Lens serves as a switch and control button* Versatile rubber strap* Light mount is designed to compensate for seat post angle * 3 modes: Constant (2.5h Forward / 1.5h Back), Fast Flashing (5.5h Forward / 3.5h Back) and Slow Flashing (6h Forward / 4h Back)* Quality Li-Ion battery