Audio-Technica ATH-SQ1TW True Wireless In-Ear Headphones (Popcorn White) - Manual (Page 22)

Using the product
21
Operation Function
Touch Starts or pauses playback.
Touch (twice) Plays the next track.
Touch (three times) Plays the previous track / returns to the start of the track.
The controls explained above may not be available on some smartphones.
L (left) side headphone touch sensor operations
1 Touch sensor
Operation Function
Touch Increases the volume by 1 level.
[1][2]
Touch (twice) Decreases the volume by 1 level. [1][2]
[1] A beep is heard each time the volume is increased/decreased by 1 level.
[2] The volume control of some Bluetooth devices may not work well with the product.
The controls explained above may not be available on some smartphones.
Talking on the phone
If your Bluetooth device supports telephone features, you can use the product to talk on the phone.
1
Remove the headphones from the charging case and place them in your ears.
2
Make/receive calls with your Bluetooth device.
When your Bluetooth device receives a phone call, the product sounds a ringtone.
If a call is received while you are listening to music, music playback is paused.
3
Touch the touch sensor on the headphones (L (left) or R (right) side) to answer incoming calls.
Calls can be answered from either the L (left) or R (right) side headphone.
4
Touch the touch sensor on the L (left) side headphone once or twice in a row to adjust the volume
(up or down).