Optoma EP761. Projector brightness: 3200 ANSI lumens, Aspect ratio: 4:3, 16:9, Projection technology: DLP. Service life of lamp: 4000 h, Lamp power: 220 W. Focal length range (f-f): 21.79 - 23.99 mm, Throw ratio: 1.95 - 2.15:1. Vertical scan range: 47 - 85 Hz, Horizontal scan range: 31.5 - 100 kHz. RMS rated power: 2 W