Optoma EW610ST. Projector brightness: 3100 ANSI lumens, Aspect ratio: 16:10, Projection technology: DLP. Service life of lamp: 3000 h, Service life of lamp (economic mode): 4000 h. Focal length range (f-f): 2.8 - 7.35 mm, Throw ratio: 0.52:1. Vertical scan range: 25 - 85 Hz, Horizontal scan range: 15 - 91 kHz. RMS rated power: 10 W