? Projection technology from Texas Instruments DLP technology / the latest generation SVGA DMD chip resolution 800x600 (SVGA), supports up to 1600x1200 60Hz PC signal output brightness 3200 ISO21118 lumens Contrast Ratio 20,000: 1 Display color 1073.4 million colors (30bit) Projection Lens f = 21.85 ~ 24mm, F # 2.41 ~ 2.53,1.1x times manual zoom / focus projection size (diagonal) 27 to 300-inch projection ratio from 1.95 to 2.15: 1 (projection distance / screen width) Projection Distance 1m ~ 12 m Keystone Correction Vertical ± 40 ° Display format 4: 3, compatible 16: 9, Native, automatic scanning frequency level: 15.375 ~ 91.146 KHz / Vertical: 24 ~ 85 Hz (120Hz for 3D) video compatible format SDTV (480i / p, 576i / p ), NTSC, PAL, SECAM signal input and output interface VGA in x 1, S-Video x 1, Composite Video x 1, RS-232 x 1 (9 Pin), 29dB Mini USB x 1 evenness 85% working noise (saving mode) / 34dB (Bright mode) specifications 190W bulb replaceable energy efficient light bulbs 6500 hours lamp life (intelligent power-saving mode) / 5000 hours (highlight mode) Rated voltage AC 100 ~ 240V ± 10%, 50 / 60Hz Machine Power Max 250W @ 220VAC (Bright mode) / ≤0.5W (standby) volume, weight 31.4x 22.4 x 10.2 cm (with feet) / 2.5 kg lifting screw M4 x10mm x3 pieces computer compatible format UXGA ,, SXGA, WXGA, 720P , XGA, SVGA