Bike Lights Smart Sensor

Features: Keep You Safe - Smart Sensing brake light and 5 modes and wide 180 degree visibility ensure you are seen farther away even on a busy street during the daytime. WIRELESS USB Rechargeable - The bike rear light powered by wireless usb rechargeable, easy to charging on laptop, power bank and more usb ports. It also very portable and fully charged quickly. 2 kinds of Installation - This taillight can be installed in the seatpost and saddle holder Versatile Mounting Options - Added the tail light clip, its easy installation, it can be mounted on helmet,your backpack or seat bag to keep safe.