Crelander LED Backpack, 15 inch App Control Laptop Backpack with Programmable Screen Smart Dynamic Daypack Waterproof Commuter Bag for Travel Riding Work (blue)

【Programmable LED Display】: This LED backpack features a full-color 64x64 dot matrix screen that you can program with your own pictures and GIFs via the mobile APP, perfect for creative expression and customization. 【Multiple Use Occasions】: Ideal for various occasions, this programmable backpack is great for advertising, travel, work, holidays, and hiking, making your LED backpack a standout accessory for visibility and fun. 【Large Capacity Backpack】: This high-capacity backpack easily stores your 15-inch laptop, books, tablets, water bottles, and other daily essentials, making the LED backpack a practical choice for work, or travel. 【Durable and Waterproof Material】: Made from sturdy, waterproof tarpaulin material, this durable backpack effectively protects your belongings from rain, while the ergonomic design ensures long-lasting comfort and use. 【Comfortable and Secure Design】: Designed for comfort, this LED backpack features adjustable wide straps, a breathable mesh back panel, and a convenient magnetic closure for secure and easy access. (Power: 5V/2A. Excludes power bank)