Optoma EX551. Projector brightness: 2800 ANSI lumens, Aspect ratio: 4:3, Projection technology: DLP. Service life of lamp: 5000 h, Lamp power: 180 W, Service life of lamp (economic mode): 6000 h. Focus: Auto/Manual, Throw ratio: 1.97 - 2.17:1. Vertical scan range: 24 - 85 Hz, Horizontal scan range: 15.3 - 91.1 kHz. RMS rated power: 2 W