HAVIT&reg; HV-MS924GT 6-Button Ergonomic 2.4G Wireless Mouse with 10 Meter Range (Black+Grey) 6-button mouse allows you to navigate web pages and work efficiently 2.4ghz USB receiver with a 10 meter range Adjustable DPI:1000-1600DPI Ergonomic and fits extremely naturally in your hand All HAVIT products are backed by a full 1 year manufacturer's warranty