The "LE" stands for "low energy" and it's one of the primary advantages of Bluetooth LE over other Bluetooth.
BLE leverages a trade off of range vs connection speed. So the fact that its slower connection speed allows for more range means you couldn't play music across that greater span, but you can effectively transfer small payloads like sensor data. Also, this slower connection speed requirement means the sensor can allocate additional power to tasks more central to the purpose of the device. For example, it makes it possible for the sensor to have a higher sample rate.