Smart Display Screen Waterproof Outdoor Biking Walking Advertising Backpack

Specification: 
Item Type: Advertising Light
Voltage: 5V 2A
Power Source: DC
Usage: Advertising
Model Number: Advertising Backpack
Size: 46cm*32cm*14cm, 17 inches
Capacity: 22L
Bag size: medium
Communication method: WIFI connection mobile phone control
System compatible: iOS,Android
with Logo: No
LED Screen Size: 25x25cm, 5V, 64x64 full color dot screen
Package includes:
1 x LED backpack
1 x manual

WARRANTY

We'll refund your money if the item hasn't been delivered within 40 days after purchase. You have 2 weeks to request a refund — until day 60.
Product doesn't match the description? Contact us within 30 days after you receive it!
In case of cancellation, money will be refunded to your account within 3 days.