Optoma EX610ST. Projector brightness: 3000 ANSI lumens, Aspect ratio: 4:3, Projection technology: DLP. Service life of lamp: 3000 h, Service life of lamp (economic mode): 4000 h. Throw ratio: 0.626:1. Vertical scan range: 25 - 85 Hz, Horizontal scan range: 15 - 91 kHz. RMS rated power: 10 W