1.*Auto induction braking device 2.*Automatically turn on/off depending on the light intensity and motion. 3.*Automatically switch to sleep mode to save power. 4.*Saddle + Seat tube installation 5.*6 flash modes. 6.*20hrs+ run time. 7.*420mAh re-chargeable battery. 8.*USB charging. 9.*Compact and Light weight design. 10.*IPx6 Water proof.