Benq ST550K 55" LED 4K Ultra HD Black public display

139.7 cm (55 ") LED, 3840 x 2160, 16:9, 350cd/m2, CR 1200:1, 6ms, 1 x IR receiver, 1 x RJ-45, 3 x HDMI, 1 x VGA, 4 x USB A, Composite Out, Component In, COAX, RMS 16W The BenQ ST550K is the best smart signage ever for in-store display. Besides the striking 4K2K UHD images, you can plug ‘n’ play with an USB flash drive, no extra media player needed, as well as edit, display and manage your digital contents using BenQ’s X-Sign app and custom Android OS platform.