ELI5: Explain Like I'm 5

Bluetooth Low Energy

Bluetooth Low Energy (BLE) is a type of technology, like Wi-Fi or a radio. It uses radio waves to send information from one device to another. BLE is usually used to transfer small amounts of data, such as the temperature, information from a heart rate sensor, or something like that. BLE uses less energy than other types of radio technology, which makes it easier to keep your device going for longer. This can be useful if you have a device that doesn't have a lot of power, like a fitness tracker, because it can use the Bluetooth Low Energy connection to send information and it won't use up the battery life too quickly.