Epson 4K PRO-UHD Projector (EH-TW7000) - Screen Size: 40 inches - 500 inches, Resolution: 4K PRO-UHD, 16:9, High Definition: 4K Enhancement, Aspect Ratio: 16:9, Contrast Ratio: 40,000 : 1, 3D Vertical Refresh Rate: 400 Hz - 480 Hz, Interfaces: 2 x USB 2.0 Type A , USB 2.0 Type Mini-B, 2 x HDMI in , Stereo mini jack audio out, Bluetooth, Positioning: Ceiling Mounted, Desktop