Ricoh PJ WX4130 Ultra Short Throw Projector System Single chip DLP system Projection Method Ultra short-focus lens/mirror projection Resolution WXGA - 1280 x 800 dpi (1,024,000 Picture Elements) White Light Output (brightness) 2,500 lm Color Reproduction 16.77 million colors Contrast Ratio 2500:1 Size of Projected Image 48" - 80" Projection Distance (from rear of unit to projection surface) 4.6" to 9.8" Lamp Type High-pressure mercury (Standard Mode: 225W; Economy Mode: 170W) Lamp Life Standard Mode: 3,000 hours; Economy Mode: 4,000 hours mage Input Mini D-sub 15 pin x 1, HDMI x 1, RCA pin x 1 Audio Input 3.5 mm diameter stereo mini pin jack x 1 RS232C USB-Type-minB x 1