Acer Basic X128HP. Projector brightness: 4000 ANSI lumens, Projection technology: DLP, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 6000 h, Service life of light source (economic mode): 10000 h. Focal length range (f-f): 21.85 - 24.01 mm, Aperture range (F-F): 21.85 - 24.01, Throw ratio: 1.94 to 2.16 (1295.40 mm @ 2000 mm). Analog signal format system: NTSC,PAL,SECAM, Supported graphics resolutions: 1024 x 768 (XGA),1920 x 1200 (WUXGA). Projection modes: Ceiling,Front,Rear, Compatible operating systems: Mac PC, Windows PC