This blue, ergonomic ball mouse by Serif is perfect for those who prefer a trackball over a traditional mouse. With a maximum DPI of 800 and optical tracking method, this MS-04A model provides smooth and accurate movement. It has 2 buttons and connects via PS/2. The mouse is unused and in excellent working condition. The Serif ball mouse is a great addition to any computer setup and its custom bundle feature makes it even more versatile. Its brand and model are well-known and trusted in the market, making it a reliable choice for those who need a mouse for everyday use.
eBay