This bicycle LED tail light with smart speed sensor can highlight automatically to remind the vehicles and pedestrians. It comes with a wireless remote controller to switch the modes which give signal to others. It can be installed on the seatpost or your helmet, keeping you safe at night.

Features:
Super bright LED red light keeps you visible and safe at night.
Easy to switch modes by pressing the buttons of the remote controller: Turn Left, Turn Right, Flash.
Smart speed sensor can identify deceleration and acceleration, automatically highlight to remind the vehicles and pedestrians behind you.
Built-in 600mAh rechargeable polymer lithium battery takes 2-3 hours to full charge, with long standby up to 4-5 days.
The remote controller is powered by a replaceable CR2032 cell battery, working for up to 6 months.
Easy to install the light on the seatpost or a helmet; mount the remote controller on the handlebar for easy operation.
Made of high-quality ABS and PC material, the light is IP65 waterproof and durable. (Do not soak the light in water)

Specifications:
Material: ABS, PC, TPU, Silica gel
Power Consumption: 2W - 10W
Battery: 3.7V 600mAh polymer lithium battery
Frequency of Remote Controller: FM 433MHz
Dimension: 80 * 40 * 25mm / 3.1 * 1.6 * 1.0in
Package Size: 190 * 125 * 48mm / 7.5 * 4.9 * 1.9in
Package Weight: Approx. 220g / 7.8oz

Package List:
1 * Bike Tail Light
1 * Handlebar Mount
1 * Helmet Connector
1 * Remote Controller
1 * Charging Cable
1 * Remote Controller Cover