product desc: microsoft lifechat zx-6000 black usbcolour: black* comfortable headset features a win live call button that makes callingfast & easy, wireless 2.4-ghz tech up to 30 feet, & an advanced battthat lets user talk up to 8 hours between charges* revolutionary ergonomic design & soft-touch materials fit users hand asnaturally as a handshake* instant viewer* scroll 4 ways for greater efficiency & comfort with tilt wheel tech* point & click to enlarge & edit detail using the magnifier* battery life indicator* with high definition laser tech ms high definition laser mouse productsare more precise, more responsive, and deliver smoother tracking* get quick access to the media, programs, and files you use most oftenwith customizable buttons* mouse has 5 customizable buttons that can be programmed to do a varietyof functionssys reqs: os: windows vista or windows xp with service pack 2 (sp2)hard drive: 100mb freeconnectivity: usb 1.1 port or higher (2.0 recommended)proc: intel piii 550 mhz (intel p4 1.4 ghz recommended) orhighercd-rom drivebroadband internet access required