Specifications:

1). Brake light: high light for 3 - 5 seconds when braking.                                               
2). Motion Sensor light: It will turn on when moving the bike slightly, and turn off after 45s if the bike not moved anymore.                                                                                                      
3). Material: Aluminum + ABS.                                               
4). USB rechargeable.        
5). Two types of brakcets option: one silicone for seatpost, one aluminum for saddle.
6). Modes: Constant - breath - fast flash - slow flash - rythem - energy saving mode.
7). Battery capacity: 500mAh.
8). Lumen: 46 lumen.
9). Weight: 56g.
10). Packaging:color box.