BenQ LH850ST 4000lms 1080p Laser Simulation Projector - 4,000 ANSI Lumen - 1920x1080 - 0.5 Short-Throw Ratio - IP5X Dust Guard Dustproofing - 2x HDMI 2.0 - RJ45 LAN - USB 2.0 Type-A - RS232 In (DB-9pin) - Built-in 10W Speaker - 3.5mm Audio Out (LH850ST)