ViewSonic PX748-4K UHD Home Entertainment Projector - Light Source: Lamp - Native Resolution: 3840 x 2160 - Brightness: 4000 ANSI Lumens - Contrast Ratio: 12,000:1 (Dynamic) - Display Colour: 1.07B (10-Bit) - Keystone: +/- 40 (H), +/- 40 (V) - Throw Ratio: 1.13-1.47 - Throw Distance: 0.75m~9.76m - Lens: F= 1.94-2.12, f= 12-15.6mm - Optical Zoom: 1.3x - Image Size: 0.762 ~ 7.62m - PX748-4K - 12 Months Limited Warranty - Open Box

Manufacturer Warranty: 12 Months Limited Warranty

Manufacturer Contact Info: http://www.viewsonic.com.au/, 1800 880 818