A4-TECH A4TMYS44125 Mouse A4Tech V-TRACK 80036400 Product Description: A4Tech V-Track N-708X - mouse - USB - grey Device Type: Mouse Connectivity Technology: Wired - USB Colour: Grey Orientation: Right and left-handed Movement Detection Technology: Optical Buttons Qty: 6 Movement Resolution: 1600 dpi Performance: Realtime sensitivity switching 600/1000/1600 dpi Features: Scrolling wheel (4-way), V-Track technology Cable Length: 1.8 m OS Required: Microsoft Windows 2000/XP/Vista/7, Microsoft Windows 2003 Manufacturer Warranty: 2-year warranty