When the headphone is off, press and hold the middle button for about 5 seconds, then the headphone enters the pairing mode, and a sound in English says “Power on” and during the pairing process, the light flashes Alternating blue and white After entering search mode, if the speaker does not detect any device to connect to after five minutes, it will automatically stop.

Turn on Bluetooth on your phone and search for Bluetooth devices.

Select the Bluetooth device

Choose the Bluetooth device “Soundtec-EP” in the search screen for Bluetooth devices on your phone, use the password “0000” to connect the two devices, and establish a Bluetooth connection, then a voice in English will say “Connecting / Connecting”, indicating the success of the operation Delivery. In online mode, the blue light flashes twice every 4 seconds.

Low battery (meaning the remaining talk time is less than 10 minutes): The voltage starts to drop below 3.3V, senses you once every minute and the speaker turns off automatically when the voltage drops below 3.1V.