A Bluetooth keyboard is a wireless input device that connects to computers, tablets, or smartphones using Bluetooth technology. This allows users to type without being physically tethered to their devices, providing greater flexibility and convenience. Bluetooth keyboards are often compact and portable, making them ideal for on-the-go use. These keyboards typically run on batteries and can connect to multiple devices, allowing users to switch between them easily. Many models feature additional functions, such as backlighting or multimedia keys, enhancing the typing experience. Overall, Bluetooth keyboards are a popular choice for those seeking a versatile and efficient typing solution.