This backpack is equipped with dual-sided, 4 LED signal lights which will respond to signal received from remote controller, reminding passengers and drivers keep distance from you. Built-in 500mAh rechargeable battery. It can work 20-30 hours of continuous work after 3 hours full charging. Absolutely a perfect add-on for night safety cycling.

Features:
Dual-side, 4 Led signals, reminding passengers and drivers to keep a safe distance._
Wireless control, mounting it on handle bar, free your hands, safe and convenient.
Built-in 500mAh rechargeable lithium battery, easy to recharges from your computer or any device with USB port.
20-30 hours of continuous work after 3 hours full charging.
Ultra light and ultra thin, easy to wear without adding extra burden.
Perfect choice for running, cycling, mountaineering, hiking, fishing, _cross-country and other outdoor activities._


Specifications:
Material: PC ABS
Color: Green
Working Time: 20 - 30 hours
Charging Time: 3 hours
Battery: 4.2V, 500mAh
Bag Size: 25.4 * 22.9 * 2.2 cm / 10 * 9 * 0.9 in
Bag Weight: 460 g / 1.0 lb

Package List:_
1* Bag
1 * Wireless Controller
1 * Controller Mounting Base
1 * USB Cable
4 * Zip Ties
1 * Manual