Epson EB-G5450WU. Projector brightness: 4000 ANSI lumens, Aspect ratio: 16:10, Projection technology: LCD. Service life of lamp: 2000 h, Lamp power: 275 W, Lamp type: UHE. Focus: Manual, Focal length range (f-f): 21.28–37.94 mm, Aperture range (F-F): 1.65 - 2.55. RMS rated power: 7 W. Wireless LAN type: 802.11b, 802.11g, 802.11n