Brightness of 4500 Lumens XGA (1024 x 768) Native Resolution 1.48 to 1.93:1 Throw Ratio VGA, Composite, 3x HDMI Inputs VGA Output for Loop-Through Analog Audio Input and Output Built-In 10W Speaker Compatible with Crestron & AMX Systems Ethernet & RS-232 Controllable Hidden Compartment for Streaming Device