• 8 Buttons
• 1 x Wheel
• RF WirelessCompatible with Windows XP, Windows Vista, Windows 7, Mac OS X 10.4 or later
• Hyper-fast scrolling lets you fly through long documents and Web pages
• The sculpted, right-hand shape guides your hand to a naturally comfortable position
• Logitech Marathon Mouse M705 uses less than half the power of comparable wireless mice
• Certified Refurbished: Professionally restored to factory specifications by the manufacturer or manufacturer-approved vendor. Certified to look & work like new with limited or no signs of wear – A pre-owned item that may not be in original packaging

Also check