Optoma ES550. Projector brightness: 2800 ANSI lumens, Aspect ratio: 4:3, Projection technology: DLP. Service life of lamp: 5000 h, Lamp power: 180 W, Service life of lamp (economic mode): 6000 h. Focus: Manual, Focal length range (f-f): 21.95 - 24.18 mm, Aperture range (F-F): 2.51 - 2.69. Vertical scan range: 24 - 85 Hz, Horizontal scan range: 15.3 - 91.1 kHz. Analog signal format system: NTSC, PAL, SECAM