Optoma EW531. Projector brightness: 2600 ANSI lumens, Aspect ratio: 4:3, 16:9, 16:10, Projection technology: DLP. Service life of lamp: 3000 h, Lamp power: 185 W, Service life of lamp (economic mode): 4000 h. Throw ratio: 1.55 - 1.7:1. Vertical scan range: 24 - 85 Hz, Horizontal scan range: 15.3 - 91.1 kHz. RMS rated power: 2 W