[. . . ] It has a USB interface and Dolby® headphone technology certificate. [. . . ] It can produce virtual Dolby surround effects just by installing the software. When playing shooter or a character game, the Dolby® technology lets you feel the most realistic effects as if you’re in the game. of 50MB free hard disk space • Impedance: 32ohm +/- 20% • Windows 98SE/ME/2000/XP/MCE • Sensitivity: 112dB +/-3dB@ 1KHz • Distortion (THD): <3% @1KHz for 1mW • CD/DVD-ROM Drive • Available USB port • Max input: 5mW Mic mute Volume up Earphone Comparison: Models Package HS-04A HS-04V PJ605 (New!) Dates Available: Samples: Aug. 2006 Shipping information Specification Frequency response Sensitivity Impendence (@1KHz) Weight Cable length Interface Dolby Shipping information Pcs per carton CUFT 10 2. 68 10 1. 95 20Hz~20KHz 100dB 32ohm 180g 1. 5M 3. 5mm 20Hz~20KHz 108dB 32ohm 200g 1. 5M 3. 5mm - 20Hz~20KHz 112dB 32ohm 220g 1. 5M USB Yes 20 5. 25 Carton/pcs: 20pcs Carton size: 610 x 520 x 470mm Cuft: 5. 25 WEEE Data: • Body weight: 220g • Gift box size: 30 x 22. 6 x 9. 8cm • Carton size: 61 x 52 x 47 cm [. . . ] of 50MB free hard disk space • Impedance: 32ohm +/- 20% • Windows 98SE/ME/2000/XP/MCE • Sensitivity: 112dB +/-3dB@ 1KHz • Distortion (THD): <3% @1KHz for 1mW • CD/DVD-ROM Drive • Available USB port • Max input: 5mW Mic mute Volume up Earphone Comparison: Models Package HS-04A HS-04V PJ605 (New!) Dates Available: Samples: Aug. [. . . ]