1. Support points: 64x64 full-color dot matrix screen2. Point spacing: P3.753. Rated voltage: 5V/2A4. Power supply mode: mobile power supply (not included)5. Transmission method: Bluetooth6. Support picture animation size: 64x64 pixels, 72 resolution7. Support file format: text, picture, GIF animation8. Material: PU leather, polyester lining9. Applicable gender: both male and female10. Screen size: about 25x25cm11. Backpack size: about 30x13x43cm12. Weight: about 1kgFeatures:1. Built-in templates, free to edit content2. Use Bluetooth to transfer data3. The air deflector backboard supports the back and shares the pressure on the shoulders, with gaps and no stuffiness4. Honeycomb cotton material, breathable and soft5. Airtight two-way zipper, airtight and anti-seepage, the zipper is smooth and easy to use6. Ergonomically widened shoulder straps fit the shoulders, comfortable and not slipping, effectively reducing shoulder pressure7. Fine stitches, strong and wear-resistant8. Power bank power supply, flexible and convenient, safe and stable9. The surface is made of waterproof material, which can effectively prevent the screen and the contents of the bag from being corroded by rain10. All-in-one all-inclusive screen film, good light transmission, waterproof and dustproof, wear-resistant and scratch-resistantSpecification: Package Weight One Package Weight 1.54kgs / 3.40lb One Package Size 32cm * 42cm * 9cm / 12.6inch * 16.54inch * 3.54inch Qty per Carton 20 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 20 pcs = 3540 pcs40HQ: 412 cartons * 20 pcs = 8240 pcs