55 Inch Portable Battery Powered Display Key Features: ● Waterproof & dustproof, designed for all-weather outdoor use ● 1920×1080 HD resolution, 178° wide viewing angle ● 1500–2500 cd/m² high brightness, sunlight-readable ● Optional capacitive touch screen ● Built-in lithium battery, up to 14 hrs runtime ● Supports multiple media formats, CMS for easy updates ● Certified with CCC, FCC, RoHS, CE ● Perfect for retail stores, malls, airports, and more