BenQ TK710STi 3200 Lumens 4K Gaming ProjectorDisplay: Brightness (ANSI Lumens) 3200 Resolution 4K UHD (3840x2160) Native Aspect Ratio 16: 9 Contrast Ratio (FOFO) 600,000: 1 (w Lightsource Dimming) Display Color 30 bit (1. 07 billion colors) Light Source Laser Light Source Life (Normal) 20,000 hours Light Source Life (ECO) 20,000 hours Optical: Throw Ratio 0. 69~0. 83 Zoom Ratio 1. 2x Lens F # = 2. 53~2. 73 , f = 10. 2~12. 24 mm Projection Offset (Full Height) 102. 5% Keystone Adjustment 3D,