dlp technology by texas instruments lamp : 280w, 2000/3000 hours (normal/economic mode) contrast ratio :3500:1 (full on/full off) image size : 35" to 300" throw ratio: 1.9(wide)~2.2(tele), 54"@2m lens: f=2.6~2.81 , f=26.01~29.84mm , zoom ratio : manual zoom, 1.15:1 display colours : full 16.7 million colour palette aspect ratio: 4:3 native / 16:9 selectable horizontal freq (khz) : 31-90 khz ; vertical scan rate :50-85 hz projection position :front/rear, table/ceiling input terminals : pc: analog rgb: d-sub 15 pin x 1; dvi-i(hdcp supp) x 1 input terminals : a/v: hdmi(v1.3) x 1 ; dvi-i(hdcp support) x 1 component video: d-sub 15 pin (shared with analog rgb connector) s-video: mini din 4 pin x 1, composite video: rca x 1 input terminals : audio: stereo mini jack x 1, rca(l/r) x 1 output terminals : pc : d-sub (15 pin) x 1, stereo mini jack x 1 audio : 3 watt speaker x 1 control terminals: serial conn: rs232 (d-sub 9pin) x 1; usb conn: usb x 1 (type b) video compatibility : ntsc/pal/secam power consumption : 350w, standby<5w dimensions: (wxhxd)325 x 95 x 254 mm ;weight : 3.4 kg 1300 130 336 for technical support parallel imported warranty: warranty one year delivery within 2-4 business days