Acer M311 DLP WXGA Projector (MR.JUT11.00M) - DLP Projection System, Throw Ratio: 1.54 to 1.72, Digital Zoom: 2x, Optical Zoom: 1.1x, Screen Size: 30 – 300-inch, Native Resolution: WXGA (1280 x 800), Standard Mode Brightness: 4500 Lumens, Native Aspect Ratio: 16:10, Contrast Ratio: 20 000: 1, Number of Speakers: 1 x 10W Mono, Number of Lamps: 1, Lamp Power: 220W, Wireless 802.11a/b/g/n/ac + Bluetooth 4.2, Connectivity: 1 x USB 2.0 Type-A, 1 x Composite Video, 1 x VGA In, 1 x VGA Out, 1 x HDMI, 1 x RS-232, Audio In, Audio Out, Weight: 2.70kg