21.5 Inch Waterproof Digital Android Backpack Billboard

Ultra-Bright HD Display
– High-resolution 21.5-inch Android screen ensures vivid visuals even in direct sunlight, perfect for dynamic advertising.
Rugged & Waterproof Design
– Heavy-duty PVC casing with IP65 rating resists rain, dust, and accidental spills for reliable outdoor use.
Lightweight & Ergonomic
– Reinforced padded straps and breathable mesh back panel allow comfortable all-day wear while walking or standing.
Long-Lasting Battery
– Built-in 20,000mAh power bank supports 8+ hours of continuous playback, with USB-C fast charging.
Smart Android System
– Preloaded with ad management software, Wi-Fi/4G connectivity, and remote content updates via cloud control.
Multi-Scene Application
– Ideal for street promotions, event branding, food delivery ads, and tourist guides—turn any crowd into your audience.
Bulk Order Savings
– Wholesale pricing available for large-scale campaigns, with OEM/ODM customization options.
Global Shipping
– Fast logistics support for bulk buyers, ensuring seamless delivery worldwide.