Note The heat dissipation function of this Bluetooth headset is not very good, which causes the Bluetooth headset to make phone calls or listen to songs. Listening to music for too long, the Bluetooth headset has been in a working state, which can also lead to hot. Generally, Bluetooth headphones are mainly used for phone calls, if you want to listen to music, you can buy Bluetooth headphones for listening to music. It is recommended not to listen to music with Bluetooth headphones for too long, one is not good for the battery of Bluetooth headphones, one is not good for hearing.