Detailed Product Description LED display (leading supplies)Indoor - pitch 3.5mm, 4mm, 4.2mm, 4.4mm, 6mm, 7.62mm, 8mm, 10mm, ... design etcYaham Patent Control System better color revivification, more exquisite video display because of advanced technology in the system for gray ... display 1080P HD video.Service Acessfront, it means if any defects, we should maintain the screen of pitch 3.5mm in the front ...