A wireless mouse differs from a wired model mainly by replacing the permanent cable with a battery-powered radio link such as 2.4 GHz, Bluetooth, or both. The practical result is more desk freedom, easier portability, and less cable drag, but also a dependence on charging or battery replacement.
Wireless design changes more than just the connection. A wireless mouse usually has to balance battery size, weight, sleep behavior, charging method, and radio reliability, while a wired mouse can focus more directly on continuous power and uninterrupted data transfer.
That does not mean wireless mice are always slower or worse. Modern high-end wireless models can perform extremely well, but wired models still keep the advantages of zero charging hassle, a guaranteed physical connection, and fewer variables during long uninterrupted use.
What wireless connections are common on computer mice?
The most common wireless connections on computer mice are 2.4 GHz dongles, Bluetooth, and dual-mode combinations that support both. Each option solves a slightly different problem, so connection type matters almost as much as the mouse shape itself.
2.4 GHz wireless is the most common mainstream option because it is simple and usually stable with low setup friction. Bluetooth is more convenient for laptops and tablets when you do not want to occupy a USB receiver, while dual-mode mice try to combine both advantages in one device.
Wireless mice can also blur the line with wired use. Many current models support wired / 2.4 GHz or wired / Bluetooth / 2.4 GHz operation, which means you can use them wirelessly most of the time but still plug them in for charging or continuous desktop use when needed.