ChillCheer Full-Color LED Dot-Matrix Backpack with Bluetooth — Waterproof Programmable Laptop Bag for Men & Women

Built with waterproof cloth and a full color dot matrix screen, this ChillCheer LED backpack uses programmable screen technology so you can display your own images and GIF animations. Upload pictures from your phone or create custom messages and doodles inside the APP. Perfect for holiday wishes, traveling, work, advertising, hiking. Durable & stylish construction uses waterproof, scratch-resistant materials for long-lasting use. Adjustable wide shoulder straps plus a mesh back panel provide comfort, breathability and stability on the move. Super capacity with expandable storage to carry bottles,books,documents,wallets,pens,cell phones,tablets,mobile power,laptops,etc. — a reliable companion for daily work, study, traveling and more. HOW TO USE 1.Connect your power bank 2.Download the APP 3.Connect Bluetooth 4 .Start Using (Please refer to the manual for using this product) WARRANTY We offer 12 months warranty and 24/7 customer service. If you have any questions about the product,please contact us.