LED Backpack with 48x48 full color dot screen that can display text, images, etc. It offers a visual experience. Waterproof hard shell with 3D design built from ABS, PC and 1680PVC for reliable weather protection, aerodynamic aesthetics, and longterm durability. Comfortable and secure fit with breathable sponge shoulder straps that are adjustable for comfort, plus a chest buckle to enhance safety while riding. APP programming via Bluetooth to LOY EYES APP allows and editing of some content. Key benefits Dynamic visibility: a full color screen on a backpack for messaging and visuals. Durable protection: weatherproof 3D hard shell shields contents while maintaining a sleek look. Secure, comfortable wear: adjustable straps and chest buckle designed for riding and everyday use. Easy content updates: Bluetooth app integration enables creation and modification of some content. Use scenarios Daily commuting or biking: display safety reminders, route information, or messages as you ride. Campus events and clubs: showcase announcements, team logos, or content during gatherings or performances. Public events or promotions: attract attention with dynamic visuals for branding, schedules, or special offers. Specifications and attributes Screen: 48x48 full color dot matrix for text, images and animations Materials: ABS, PC, 1680PVC Waterproof: yes, with a protective hard shell Comfort features: breathable sponge shoulder straps, adjustable length Safety feature: chest buckle for added riding safety App compatibility: LOY EYES APP via Bluetooth for some content