Features:
- The Safe Led Signal Pack for Running, Cycling, Walking,Motorclycing;
- The wireless signal does not interfere with each other, if Multi-user are using it at close range concurrently.

Specifications:
Main function: turn signal for cycling, traveling, hiking, etc.
Working frequency: 2.4 GHz
Waterproof level:PIX-5
Transmission distance: 3 meters (depending on the surroundings)
Battery of the transmitter: 2 pieces of button cells 2032 (Non-rechargeable)
Battery of the receiver: Built-in 850 mAH lithium Battery (Rechargeable)
Working time: 24 hours
Charging: DC 5V 500mA or USB
Material of the receiver pack: nylon, oxford fabric
Shell material of transmitter: PC ABS
Turn signal pattern: right, left, forward, stop
Storage Temperature: -30℃ to
Operating Temperature:-10℃ to 60℃

About Laptop Backpack 20 Liter:
This is a 20L Backpack, also include led singal control, specifial design and multi-function, it's as laptop bag, travel bag, business bag, or school bag for your children.

What's in the package:
1 x Led Cycling Turn Signal Light 20Liter Backpack
1 x Remote control
1 x Controller Connector
1 x User Manual