NEC NP610, 3500 ANSI lumens, LCD, XGA (1024x768), 500:1, 15 - 100 kHz, 50 - 120 Hz NEC NP610. Projector brightness: 3500 ANSI lumens, Projection technology: LCD, Projector native resolution: XGA (1024x768). Light source type: Lamp, Service life of light source: 4000 h, Service life of light source (economic mode): 5000 h. Focal length range: 19.8 - 23.7 mm, Throw ratio: 1.5 - 1.8:1. Serial interface type: RS-232. Noise level: 35 dB