Acer X1228i DLP Projector – DLP Projection System, Zoom, Digital Zoom 2x, Native Resolution 1024 x 768, Standard Mode Brightness 4800 Lumens, Native Aspect Ratio 4:3, Contrast Ratio 20 000: 1, Number of Speakers 1 x 3W Mono, Number of Lamps 1, Lamp Power 220W, Wireless Capability EZCast, Miracast Wi-Fi, Connectivity 1 x USB 2.0 Type-A, 1 x HDMI, 1 x RS-232, 1 x VGA-in, Component-In, Audio In, Audio Out, Retail Box, 1 Year Warranty.