Instructions for operating the S51 wireless earphones buttons.
One click on the left or right earbud: plays or pauses music, answers a call or hangs up.
Click three times on the left or right earbud: when the device is switched on, Siri is summoned.
Long press on the left or right earbud for 2 seconds: when there is an incoming call, it refuses to answer. In the off state, it is switched on.
Long press on the left and right earbud for 4 seconds: it is switched off (when the device is not connected).
Long press on the left and right earbud. When the device is connected, long press the right earbud to increase the volume and long press the left earbud to decrease the volume.
Double press on the right earbud is the next song, double press on the left earbud is the previous song.
Binaural/monaural switching of the earphones: When the earphones are connected to the device, the signal is received in a dual-transmission mode, and the two earphones are not separated into primary and secondary; during the pairing and use of the two earphones, either earbud can be switched off without cutting off the use status of the other earbud; when either earbud is opened, it will automatically reconnect to the previously connected device.