Bluetooth is a short-range wireless communication technology used for exchanging data between devices over a short distance.

Elaboration:

• Operates in the 2.4 GHz ISM band.
• Supports profiles like A2DP (audio streaming), HID (keyboard/mouse), and HFP (hands-free calling).
• Low Energy (BLE) is used in IoT devices, fitness trackers, and smartwatches.

Example:

A user connects their wireless headphones to a smartphone via Bluetooth.