Acer PL Serie - PL2520i. Projector brightness: 4000 ANSI lumens, Projection technology: DMD, Projector native resolution: 1080p (1920x1080). Light source type: Laser, Service life of light source: 20000 h, Service life of light source (economic mode): 30000 h. Focal length range: 2.43 - 2.78 mm, Aperture range (F-F): 2.43 - 2.78, Offset: 116%. Serial interface type: RS-232, Service port type: USB Type-A. Noise level: 29 dB