LED Illuminated Backpack Waterproof Casual Sports Student Bag Color:Black but energy saving and environmental

but energy saving and environmental protection

The mesh cooling holes are located at the bottom of the rear case

hold the trigger

and effectively cool down in summer

1920 x 1080 Resolution

LED Illuminated Backpack Waterproof Casual Sports Student Bag Color:Black but energy saving and environmental1. Backpack material: oxford, nylon, leather 2. Screen pixel count: 64x64 3. Screen size: 25x25cm 4. Screen pixel pitch: P3. 75 5. Power supply: power bank powered 6. Communication method: bluetooth 7. Built in material library: fun emoticons, trending topics, click to use 8. Power bank powered (not included): flexible, convenient, safe, and stable 9. Ergonomically widened shoulder straps: comfortable and slip free, effectively reduces shoulder