Features:
Light sensor,ambient light darker,stronger light lighting.
Shock sensor,when light turn off,go on riding,the light will turn on,if you forget to turn off the light,after 3 minuters,it will be turn off itself.
Power save,aurora mode can be used continuously for 2 hours and power saving mode Release 6 hours.
Safety,no glare, accident prevention.
Cutoff line design,according to the German StVZO bicycle headlight authenticate.
USB charging,easy to use.
Easy to install,anti-fall protection.
Recommended use for night riding,mountain bike,fixed gear bike and so on

Package includes:
1 x Light
1 x USB Cable

Link: https://goo.gl/3mw3K2