1. Support points: 64x64 full-color dot matrix screen 2. Point spacing: P3.75 3. Rated voltage: 5V/2A 4. Power supply mode: mobile power supply (not included) 5. Communication method: Bluetooth 6. Support picture animation size: 64x64 pixels, 72 resolution 7. Support file format: text, picture, GIF animation 8. Material: PU leather 9. Applicable gender: both male and female 10. Screen size: about 25x25cm 11. Backpack size: about 46x32x14cm 12. Weight: about 1.3kg Features: 1. Built-in templates, free to edit content 2. Use Bluetooth to transfer data 3. Support GPS positioning function 4. The use of water-repellent film to protect the LED screen, even in rainy days 5. Back wrap design, effectively relieve shoulder pressure, comfortable and widened shoulder straps 6. There is a trolley case fixing belt on the back, suitable for a variety of travel environments 7. S-shaped shoulder strap honeycomb heat dissipation design, adjustable and padded shoulder straps, effectively share the weight, and travel easily 8. The honeycomb heat dissipation back cushion keeps it clean and fresh at all times. The air deflector back plate uses air to flow freely to take away moisture and sultry heat. 9. Comfortable to carry, double-ended metal zipper, beautiful and decent 10. The screen has good light transmittance and matte material, which can effectively eliminate reflections