Acer Basic P1557Ki. Projector brightness: 4500 ANSI lumens, Projection technology: DLP, Projector native resolution: 1080p (1920x1080). Light source type: Lamp, Service life of light source: 20000 h, Lamp power: 240 W. Focal length range: 11.9 - 15.5 mm, Digital zoom: 2x, Optical zoom: 1.3x. Analog signal format system: NTSC, PAL, SECAM, Supported graphics resolutions: 1920 x 1200 (WUXGA), Supported video modes: 1080p. Serial interface type: RS-232, HDMI connector type: Full-size, USB connector type: USB Type-A