Flexible and convenient control with 1,600 DPI precision. The ambidextrous design makes it perfect for left- or right-handed users and gives you wireless USB connectivity. Two buttons give you easy left and right clicks, and the scroll wheel will help you with precise line-by-line document scrolling. You'll know when to change the included battery with the low battery indicator. The mouse is portable with the USB dongle storage. Connector/Port/Interface: USB 2.0; Left/Right Hand Use: Left/Right; Mouse Technology: Optical; Wired/Wireless: Wireless.