The Microsoft Surface Modern Mobile Wireless Bluetooth Mouse in Grey is a sleek and functional mouse designed for modern computing and mobile devices. With a maximum DPI of 1000 and optical tracking method, this mouse offers precise and smooth cursor movement. Its wireless connectivity via Bluetooth ensures easy and convenient use without the hassle of dongles or cables. The long battery life feature ensures uninterrupted productivity, making it a reliable and efficient choice for everyday use. Made by Microsoft, a trusted brand in technology, this Surface Mouse is fully tested and ready for reliable performance.