Viewsonic PJ250, 1000 ANSI lumens, 2000:1, 20 - 245", 15 - 85 kHz, 50 - 120 Hz, Portable Viewsonic PJ250. Projector brightness: 1000 ANSI lumens, Contrast ratio (typical): 2000:1, Screen size compatibility: 20 - 245". Market positioning: Portable. Power consumption (typical): 150 W. Weight: 2.2 lbs (1 kg). Aspect ratio: 4:3, 16:9, Light source: Lamp 120W, 2000 hour rating, Dimensions (WxDxH): 7.09 x 5.55 x 1.77" (180 x 141 x 45 mm)