Nice bluetooth mouse. Seems to be built good. Connects easily and the connection seems solid. Never loses connection. I do like the small compact size. Good for traveling, but with my bigger hands, I wish it was bigger... But, that's just a preference. The mouse uses one AA size battery. I have a MacMini and it only has 2 USB ports. So, this bluetooth mouse frees up a USB port. Main reason why I got one and a good reason to get one if your computer has few USB ports.