Acer H6815BD. Projector brightness: 4000 ANSI lumens, Projection technology: DLP, Projector native resolution: 2160p (3840x2160). Focal length range: 15.84 - 17.45 mm, Aperture range (F-F): 2 - 2.05. Analog signal format system: NTSC, PAL, SECAM, Supported graphics resolutions: 3840 x 2160. Compatible operating systems: Mac Windows. RMS rated power: 3 W