The Bluetooth headphones are old or have a flat battery.
Bluetooth headset is the application of Bluetooth technology in the hands-free headset, so that users can avoid annoying wires, free to talk easily in a variety of ways. Since the advent of Bluetooth headsets, they have been a good tool for mobile business people to improve their efficiency. Bluetooth is a short range wireless communication specification with low cost and large capacity. Bluetooth laptop is a laptop with Bluetooth wireless communication function.
It is mostly the cause of leakage of capacitive devices.