Benq Projector MP511. Projector brightness: 2000 ANSI lumens, Aspect ratio: 4:3, Projection technology: DLP. Service life of lamp: 2000 h, Lamp power: 180 W. Throw ratio: 2.0:1 (50"@2m). Vertical scan range: 48 - 85 Hz, Horizontal scan range: 31 - 82 kHz. Noise level: 28 dB