1) Product size:45x32x30mm
2) Material: Silicon
3) Light bulb:2 LED 13000-15000MCD/PC
4) USE:2CR2032 battery included
5) Switch Function1: 2LED ON-fast flashing-slow flashing-off ,
6) Working time: about 6-24 hours
7) Features: Tool free installation
Seat post 20-36 mm
Quick release mount bracket for bicycle front light