Connect one end of the supplied charging cable to the magnetic charging port and the other end to a USB port on your computer or a USB charger.

Whilst charging, the ESC Sounds Endurance will display a constant red light. This light will turn blue when the product is fully charged.

How to Power On: Press down the Multifunction Button for three seconds, until you hear the earbud power on.

How to Power Off: Press down the Multifunction Button for three seconds, until you hear the earbud power off.

Quickly press and release the “ + “ button to increase the volume.

Quickly press and release the “ - “ to decrease the volume.

Press and hold the “ + “ for one second to skip forward to the next track.

Press and hold the “ - “ for one second to skip back to the previous track.

When music is playing, press and quickly release the Multifunction Button once to pause the song.

When music is paused, press and quickly release the Multifunction Button once to resume playing.

In order to be fully waterproof and suitable for swimming, the ESC Sounds Endurance doesn’t contain a microphone and cannot be used for phone calls.

If your phone rings while connected to your ESC Sounds Endurance, the call can still be answered directly from your phone.

To decline an incoming call, press and hold down the Multifunction Button for 1 second.

After powering on, the ESC Sounds Endurance will automatically search for a Bluetooth device to pair with. This is indicated by the light flashing blue and red.

Open the Bluetooth list on your device and select ESC Sounds Endurance to connect your device.

Quickly press and release the Multifunction Button four times to activate and deactivate Latency Mode.

Bluetooth cannot transmit through water, so the ESC Sounds Endurance must be in MP3 mode to play underwater.  

When the headset is powered on, quickly press and release the Multifunction Button two times to alternate between Bluetooth and MP3 (Swim) mode.

Disconnect from your phone’s Bluetooth before entering MP3 mode, to prevent the buds from trying to connect to your phone when your head rises above the surface of the water.

For best underwater listening experience, we recommend using the earplugs provided.