21.5/27/32 Inch Portable Digital Signage Backpack with LCD Screen

21.5/27/32 Inch Portable Digital Signage Backpack with LCD Screen. Multiple Screen Sizes: Available in 15.6, 21.5, 27, and 32-inch options. High Brightness Display: Brightness adjustable from 400 to 1000 nits. Long Battery Life: 12000mAh capacity provides 3-4 hours of operation. Comprehensive Connectivity: Supports USB 3.0, HDMI, WiFi, Bluetooth, and optional 4G. Rich Content Playback: Plays pictures, videos, HTML, and supports interactive areas. Remote Management: Features mobile APP control and scheduled power on/off. OEM/ODM Customization: Supports personalized customization for shape and structure. Premium Screen Brands: Utilizes high-quality LG, AUO, and CHIMEI screens.