Optoma EX765W. Projector brightness: 4000 ANSI lumens, Aspect ratio: 4:3, 16:9, Projection technology: DLP. Lamp power: 280 W. Focal length range (f-f): 18.39 - 29.42 mm, Throw ratio: 1.62 - 2.64:1. Vertical scan range: 50 - 85 Hz, Horizontal scan range: 15 - 91.1 kHz. RMS rated power: 4 W