<p>Specifications:</p> <p>1:Item type: Ergonomic Optical Mouse</p> <p>2:Resolution: 2400dpi.</p> <p>3:Button: 4 buttons and 1 wheel (middle button)</p> <p>4:Dimension: 100*80*70mm</p> <p>5:Maximum operating range: 10m</p> <p>6:Charging cable Length: 50.5cm</p> <p>7:Color: Black</p> <p>8:Material: ABS</p> <p>9:Keystroke life: 10 million</p> <p>10:Tracking system: optical</p> <p>11:System Requirements:Windows 98\/Me\/2000\/XP\/Vista\/Win 7\/Win8.</p> <p>12:Item weight :133g </p> <p>Features:</p> <p>1:2.4GHz Wireless Connectivity (USB receiver \u0026 rechargeable mouse usb cable included)</p> <p>2:Built in rechargeable battery</p> <p>3:Ergonomic designed to remit and prevent carpal tunnel syndrome.</p> <p>4:Optical laser technology for precise control</p> <p>5:User convenience with -pen's signature, pen-grip comfort.</p> <p>6:L\/R mouse buttons, buttons, and a clickable scroll wheel</p> <p>7:You pick the hand position that best suits you. Plug and play, compatible with </p> <p>and PC </p> <p>Note:</p> <p>1, USB cable can only be used for charging. It can not be used as wired mouse.</p> <p>2, The mouse can be used while charging, but you should make sure </p> <p>that the USB receiver is plugged into the computer and the mouse switch is turned on.</p> <p>Wireless Mouse 2.4GHz gaming game mouse Ergonomic Design WOWPEN Vertical mouse 2400DPI JOY Wrist Pain USB Mice For Laptop PC</p> <p>Notice:this mouse dont need to use AA battery now .it have battery inside the mouse!you just used USB cable charging!!!! now not need to worried to buy batteriesagain again!</p> <p>This wireless mouse vertical ergonomic design , help you tireness after long use of the wireless mouse. Care more about . Avoid carpal tunnel syndrome </p> <p>Package includes:</p> <p>1 x Mouse</p> <p>1 x USB Power Adapter</p> <p>1 x USB Charging Cable</p> <p>1 x English manual\</p>