Hot Sale Waterproof 21.5-Inch LCD Backpack Walking Billboard for Advertising with WiFi Control
High-definition 21.5-inch LCD screen with full-color display for vibrant visuals IP65 waterproof rating ensures durability in rain or outdoor conditions Built-in WiFi control for real-time content updates via smartphone or PC Lightweight yet sturdy polycarbonate frame with reinforced stitching for long-term use Adjustable padded shoulder straps for comfortable all-day wear Ultra-bright 1500-nit screen ensures visibility even in direct sunlight Rechargeable lithium battery (12+ hours runtime) with fast-charging capability Perfect for promotions, events, festivals, and street marketing campaigns Compatible with multiple video and image formats for seamless content switching