... optional 3.with wheels 4.oem wifi/3g/lan lcd ad player , adversting display , lcd advertisng display, lcd digital signage I. ... Specification: 1. TFT LCD screenAvailable Size: 32”, 42”, 55”Resolution:1920 x 768Ratio: 16:9Brightness: 550cd/m2View angle ... digital signage system, wall system with lcd design, lcd media player, advertisement equipment, totem touch screen, touch screen lcd kiosk, ...