3.Listen to music played on the BLUETOOTH device, or make and receive a call by operating the headset.
The headset supports the following BLUETOOTH version and profiles: Communication System :
BLUETOOTH Specification Ver. 3.0
Compatible BLUETOOTH Profiles:
A2DP (Advanced Audio Distribution Profile): Transmitting or receiving audio content of
AVRCP (Audio Video Remote Control Profile): Controlling A/V equipment; pausing, stopping, starting playback, etc.
HSP (Headset Profile)*: Talking on the phone/Operating the phone. 
HFP
*When you use a BLUETOOTH smartphone or mobile phone supported by both HFP
Notes
To use the BLUETOOTH function, the BLUETOOTH device to be connected requires the same profile as that of the headset. Even if the device has the same profile, functions may vary depending on the specifications.
Due to the characteristic of BLUETOOTH wireless technology, the sound played on the headset is slightly delayed from the sound played on the BLUETOOTH
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