Waterproof Explosion-Proof LCD Advertising Backpack with U Disk WiFi 4G Cluster Control 1.85 21.5 27.32 Inch Display Sizes

This rugged LCD advertising backpack combines waterproof and explosion-proof construction with a high-visibility display for mobile digital signage. It features built-in U disk playback, WiFi and 4G connectivity, and cluster control for managing multiple units remotely. Available in three screen sizes — 1.85, 21.5, and 27.32 inches — it suits outdoor promotions, events, and retail environments. The ergonomic backpack design allows hands-free operation while the durable materials protect internal electronics in harsh conditions. Ideal for advertisers, event organizers, and field marketers needing portable, networked display solutions.