Thumb Score: +6 http://www.amazon.com/dp/B00KHSG8YM/ Code: MOUSE123 #1 Best Seller in Mac Gaming Mice! Specification Button lifetime: 5 million clicks Operating power: 5V 100mA Cable length: 5ft Interface: USB 2.0/3.0 OS compatibility: Windows XP/Vista/7/8 Package Includes 1x Etekcity Scroll Alpha Gaming Mouse 1x Customizing CD 1x User's Manual