Model Acer Projector X1 Projection system DLP® • Resolution XGA (1,024 x 768) • Maximum WUXGA (1,920 x 1,200) • Brightness 4,000 ANSI Lumens (Standard), 3,200 ANSI Lumens (ECO) • (Compliant with ISO 21118 standard) • Aspect ratio 4:3 (Native), 16:9 (Supported) • Contrast ratio 20,000:1 • Throw ratio 1.94 ~ 2.16 (51″@2m) • Zoom ratio 1.1X • Projection lens F= 2.412.53, f = 21.8524.01mm • Manual Zoom & Focus • Lamp life 6,000 Hours (Standard), 10,000 Hours (ECO), 15,000 Hours (ExtremeEco) • Noise level 32 dBA (Standard), 24 dBA (ECO) • Input interface • Analog RGB/Component Video (D-sub) x 1 • HDMI (Video, Audio, HDCP) x 1 • PC Audio (Stereo mini jack) x 1 • Composite Video (RCA) x 1