Acer Projector X1328WKi DLP 3D WXGA 4500Lm 20000/1 HDMI Wifi Bag – BlackProjection system: DLP®Light source: LampResolution: Native WXGA (1,280 x 800) Maximum WUXGA (1,920 x 1,200)Brightness: 4,500 ANSI Lumens (Standard), 3,600 ANSI Lumens (ECO)Aspect ratio: 4:3/16:9 (Supported), 16:10 (Native)Contrast ratio: 20,000: 1 Dynamic BlackThrow ratio: 1.54 ~ 1.72 (60"@2m)Lamp life: 6,000 Hours (Standard), 10,000 Hours (ECO), 15,000 Hours (ExtremeEco)Keystone Correction: +/-40° (Vertical, Manual & Auto) KeystoneProjection lens: F = 2.41 ~ 2.53, f = 21.85 ~ 24.00mm (Manual Zoom & Focus)Noise level: 27 dBA (ECO)Input interface: HDMI1.4a (Video, Audio, HDCP) x 1 PC Audio (Stereo mini jack) x 1 USB (Wireless dongle, Hidden Type A2.0) x 1Output interface: DC Out (5V/1A, USB Type A) x 1 PC Audio (Stereo mini jack) x 1Control Interface: RS232 (D-sub) x 1Dimension: 313 x 240 x 113.7mmWeight: 2.75kgFeature Highlights:Expressive display 1080p (1,920 x 1,080) 4,500 ANSI lumens Dynamic Black 20,000:1 Acer Bluelight Shield Acer LumiSense Acer ColorBoost3D Acer ColorSafe II HDMI 3DEnhanced usability Wireless projection frees you from cable chaos (Default) 3W built-in speaker AC power onInstallation flexibility +/-40° (Vertical, Manual & Auto) Keystone Auto ceiling-mounted correctionEco-friendly functionality Acer EcoProjection Up to 20,000 hours lamp life (EcoPro)W