Yamaha TW-E3C True Wireless Earbuds (Red) - Manual (Page 34)

Talking on the phone
When connecting to a Bluetooth device, you can talk, adjust the volume and so on using this product.
Operate this product as follows.
Touch Control
(
Receive a phone call
Single-tap earbud (L) when a call is coming in.
(
End a phone call
During the phone call, long-tap earbud (L) for about one second.
(
Ignore a call
Triple-tap earbud (R) when a call is coming in.
Switching between connected devices (with multi-point connection)
(
When music is playing on the first connected device, answer the phone call coming in using the other
connected device (such as a smartphone)
The music that’s playing on the first device is paused automatically. Once you hear the ringtone through
the earbuds, single tap earbud (L) or operate the connected device that’s receiving the call (such as your
smartphone).
(
When talking on the first connected device (such as a smartphone), answer the phone call coming in using
the other connected device (such as a smartphone)
Once you hear the ringtone while you are talking, operate the first connected device that you’re using for
the phone call (such as by placing the caller on hold or hanging up the phone), and then either single-tap
earbud (L) or operate the connected device that’s receiving the call.
NOTE
(
When a call is coming in, any music being played will pause. Audio playback will automatically resume when the call ends or you
ignore the call.
( When using multi-point connection, you can’t talk with more than one caller at the same time or play music while talking on the
phone.
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Operation (Audio Playback and Phone Calls) > Talking on the phone