Acer QF13. Projector brightness: 280 ANSI lumens, Projection technology: LCD, Projector native resolution: 1080p (1920x1080). Light source type: Lamp, Service life of light source: 100000 h. Focal length range: 2.9 mm, Zoom ratio: 1:1, Throw ratio: 1.4:1. Serial interface type: RS-232, HDMI version: 1.4a. Compatible memory cards: MicroSD (TransFlash)