Remote control backpack accessory: 

Product parameter: 

Product name: remote control backpack accessory

Material: dacron

Model: YKGJ0009

Frequency of wireless: 2.4GHZ

Controlling distance: within 3m

Receiver: 3.7V 850mAh Lithium battery ( USB cable to charge)

Transmitter: 2 pcs CR 2032 ( Non-chargeable)

Application: It can match all backpack with four clips and your direction guide. 

Color of light: Yellow and green optional 

Function: 

Four groups of LED lights on products triggered by a wireless remote on handbar, fully display your move intention when cycling, walking and outdoor activities. i.e.: turn right/left/forward/stop.