Specifications

The backpack Bicycle LED Light with messages for traffic behind the cyclist, from turn signals to emergencysignals, to thanking drivers for keeping their distance.

The display is made of LEDs and works in one modes, driving. Driving mode shows turn signals, forwarding, left, right, stop. The display is controlled by a controller tied on the bike, so the cyclist never has to take their hands off the handlebar.
We'd definitely love to see something like this available for cyclists, though it's probably possible to create something on your own if you really want one.

Product Description

Specifications;

l Main function: turn signal for bike riding, traveling, hiking, etc. 
l Working frequency: 2.4 GHz
l Transmission distance:At least 8 meters (depending on the surroundings)
l Battery of the transmitter: 2 pieces of button cells 2032
l Battery of the receiver: Built-in lithium Battery (650mAh), support rechargeable
l Working time: 24 hours support rechargeable
l Charging: DC 5V 500mA
l Shell material of transmitter: Waterproof PC+ABS
l Material of the receiver: Waterproof nylon, oxford fabric , Waterproof IPX-5
l Product Size: 235mm*240mm*15mm
l Elastic strap length: 185mm, 300mm(stretched)
l Weight : 169g
l Package: Gift box
l Turn signal pattern: right, left, forward, stop
l Product Accessories: a transmitter, a receiver, a user manual, four zip-tights
l Storage Temperature: -30 degree to 80 degree 
Operating Temperature:-10 degree to 60 degree

Transmitter
--Battery: 2*CR2032(non-rechargeable)
--Shell material: PC+ABS
--Waterproof Grade: IPX-5
Reciever
--Battery:4.2V,650mAh Lithium battery(continous working 24h,plug directly power adaptor DC 5V 500mAh to charge)
--Material: Nylon, Oxford cloth

Can bind the backpack pendant to your shoulder to operate.

All Colors;