Technical Specifications Projection Projection system: DLP Resolution: SVGA (800 x 600) Maximum WUXGA: (1, 920 x 1, 200) Brightness: 3, 600 ANSI Lumens (Standard), 2, 880 ANSI Lumens (ECO), Aspect ratio: 4:3 (Native), 16:9 (Supported) Contrast ratio: Dynamic Black 20, 000:1 Throw ratio: 1.94 ~ 2.16 (51"@2m) Projection lens: F = 2.41 ~ 2.53, f = 21.85mm ~ 24.01mm, Manual Zoom & Focus Keystone correction: +/-40° (Vertical, Manual) Input Analog RGB/ Component Video (D-sub) x 1 HDMI (Video, Audio, HDCP) x 1 PC Audio (Stereo mini jack) x 1 Features Acer Color Boost 3D Acer Color Safe II HDMI 3D with 144 Hz 24p 3W built-in speaker Instant resume Instant pack Acer Smart Format Keystone correction up to 40 degrees Top-loading lamp Acer Eco Projection Lamp life up to 10, 000 hours in Extreme Eco mode Lamp Life 5, 000 Hours (Standard), 6, 000 Hours (ECO), 10, 000 Hours (Extreme Eco)