Optoma EW615. Projector brightness: 3500 ANSI lumens, Projection technology: DLP, Native resolution: WXGA (1280x800). Service life of lamp: 3000 h, Lamp power: 230 W, Service life of lamp (economic mode): 4000 h. Focal length range (f-f): 18.2 - 21.8 mm, Aperture range (F-F): 2.41 - 2.66, Throw ratio: 1.28 - 1.54:1. Vertical scan range: 24 - 120 Hz, Horizontal scan range: 15 - 91 kHz. Supported video modes: 1080i, 480i, 480p, 576i, 576p, 720p