Optoma EP721I. Projector brightness: 2500 ANSI lumens, Aspect ratio: 4:3, Projection technology: DLP. Service life of lamp: 3000 h, Lamp power: 180 W. Throw ratio: 1.95 - 2.15:1. Vertical scan range: 43 - 85 Hz, Horizontal scan range: 15 - 100 kHz. Noise level: 32 dB