Toshiba t420. Projector brightness: 4000 ANSI lumens, Aspect ratio: 4:3, 16:9, Projection technology: DLP. Service life of lamp: 2000 h, Lamp power: 275 W, Service life of lamp (economic mode): 3000 h. Focus: Manual. Vertical scan range: 50 - 150 Hz, Horizontal scan range: 15 - 120 kHz. Display: DMD, Display diagonal: 17.8 mm (0.7 ")