Wireless mouse features a built-in 700mAh rechargeable battery, no need for additional. Comes with a charging cable for easy charging. Wireless computer mouse with 800/1200/1600 DPI resolution optical tracking technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfaces. Compatible with laptop, PC, tablet, Mac, ipad and iphone. Suitable for homes, offices and more. 4 3/5'' L x 2 3/10'' W