3M Portable Overhead Projector Model 2660, 2500 ANSI lumens, 4.5 m, FNT, 275 W, 15 h, 4.99 kg 3M Portable Overhead Projector Model 2660. Projector brightness: 2500 ANSI lumens. Cable length: 4.5 m. Lamp type: FNT, Bulb power: 275 W, Service life of lamp: 15 h. Weight: 4.99 kg