Brand: Optoma Model: W351 3800 lumens with 20,000:1 contrast ratio for bright, crystal clear presentations Ample connectivity with full analog and digital connectivity Full 3D compatibility, create an immersive viewing experience Up to 8000 hours lamp life minimizes cost of operation Powerful 10-Watt audio Display Display Technology: Single 0.65" DC3 DMD DLP® Technology by Texas Instruments™ Native Resolution: WXGA (1280 x 800) Maximum Resolution: WUXGA (1920 x 1200) Brightness: 3800 lumens Contrast Ratio: 20,000:1 (full on/full off) Displayable Colors: 1.07 Billion Lamp Life and Type: 8000/7000/6500/6000/4000 (Edu/ECO+/Dynamic/ECO/Bright), 210W lamp Projection Method: Front, rear, ceiling mount, table top Closed captioning, powered VGA port for WiFi dongle, direct power on Technical Specifications Keystone Correction: ±40° Vertical Uniformity: >80% Offset: 112% Aspect Ratio: 16:10 Native, 16:9 and 4:3 compatible Throw Ratio: 1.55–1.7 (distance/width) Projection Distance: 3.2'–32.8' (1–10 m) Image Size (Diagonal): 27.3"–299.5" (0.69–7.6 m) Projection Lens: F=2.5–2.67, f=21.8–23.98 mm 1.1x manual zoom and focus Digital Zoom: 1.0 ~ 2.0 Audio: 10-Watt Speaker Noise Level: 29dB Remote Control: IR remote mouse control with laser Operating Conditions: 41–104°F (5–40°C), 85% max humidity Power Power Supply AC Input 100–240V, 50–60Hz, auto-switching Power Consumption: Max 280 (Normal), Min 194 (Eco+), Brand Optoma SKU OT776EL108P4WNAFAMZ-34804 Model W351