Optoma HD28DSE 1080p 3D DLP Home Theater Projector Screen Size Range: 71-inches from 8 feet; 107-inches from 12 feet 3000 ANSI Lumens Contrast Ratio: 30,000:1; Keystone Correction: Yes, Lens Shift: No 1-Year Limited Parts and Labor, 90-Days on Lamp 2x HDMI 1.4a with MHL (on port 1), 3D Sync Port, mini USB, USB-A (USB Power Only), 12V Trigger. Please Note: Kindly refer the User Manual before use.