Mouse - Universal - M570 Wireless Trackball Mouse Drawing Mouse Support Office Desktop Test with USB Receiver 1000dpi for Universal M570 Wireless Trackball Mouse Drawing Mouse Support Office Test Desktop with USB Receiver 1000dpi for M570 Wireless Trackball Mouse Drawing Mouse Support Office Test desktop with 1000dpi USB receiver for Product is shipped based on main product page image color or size. M570 Wireless Trackball Mouse Drawing Mouse Support Office Desktop Testing with 1000dpi USB Receiver for Desktop/Laptop Computer Product is shipped based on the main image color or size on the product page.Cenumber of rolls: 1 weight:142gpackage:YesNumber of Buttons:5Operation Mode:LasersTyle:TrackballSpower Type:BatteryModel Number:M570Hand Orientation:RightInterface Type:USBStyle:Trackball Mouse