Viewsonic VS13783, 15 ANSI lumens, LCOS, VGA (640x480), 400:1, 152.4 - 1651 mm (6 - 65"), 0.03125 GB Viewsonic VS13783. Projector brightness: 15 ANSI lumens, Projection technology: LCOS, Projector native resolution: VGA (640x480). Internal storage capacity: 0.03125 GB. RMS rated power: 0.5 W. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 2100 mAh, Battery life (max): 2 h. Weight: 200 g, Package weight: 900 g