Women Men LED Backpack Display Laptop Bag Smart Light Multi-function Waterproof Large Capacity Computer Backpacks Bluetooth-compatible Control Feature: 1. Colorful display screen, upload the fonts or pictures as you want, the system comes with text, pictures, GIF animation, easy and convenient editing template operation; Support for custom content, make and upload your favorite content anytime, anywhere; 2. Remind and warn that there are pedestrians walking in front of the vehicle behind, pay attention to avoid pedestrians; 3. In case of emergency, the color display screen can be displayed to remind and ask for help from surrounding people; 4. For romantic love, you can show the person you like on the display and express your love bravely; 5. Trendy front-end, cool colored lights make you the focus of everyone's attention; 6. Nightclub artifact, more quickly attract the eyes of the opposite sex; 7. Not afraid of wind and rain. Waterproof fabric is used to protect the LED screen; The honeycomb heat dissipation design keeps the back and shoulders clean and fresh at all times; 8. Hangable design, add trolley case fixing strap High-plastic adjustable buckle, suitable for a variety of travel scenarios; Comfortable portable, ergonomic design, enhance the comfort of portable; The screen protection layer, matte material, can effectively eliminate reflections. More application scenarios: Shopping mall promotion, supermarket opening, corporate brand square product promotion, car sales, catering companies, logistics and express delivery, hair salon, creative surprises, wedding, celebrations, e-sports, holiday parties, fan pick-up and etc. Specification: Backpack size: 43*32*15cm/16.93*12.6*5.91" Backpack fabric: Front piece: black film + PCU Back piece: Oxford spinning Screen size: 25*25cm/9.84*9.84" Support points: 64*64 full-color dot matrix screen Point spacing: P3.75 spacing Power supply mode: mobile power supply Rated voltage: 5V/2A Communication method: Bluetooth-compatible Program support: text, pictures, GIF animation Support picture animation size: 64*64 pixels, 72 resolution Remarks: 10000 mA mobile power can be used continuously for 6-7 hours (for reference only) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3cm measuring deviation due to manual measurement.