For secure simple pairing your audio device must be within 1 metre of the headphones. Turn on the headphones by pressing and holding the multifunction button until 'power on, pairing' is heard and the LED indicator light should be flashing red and blue (pairing mode). Go into your device settings, select and turn on Bluetooth on your device. Scan for new Bluetooth devices and select your headphones model. You will not be prompted for a pass code for pairing. (Note: Bluetooth audio connectivity can vary between devices so it can be beneficial to firstly consult with your audio source user manual for pairing instructions if unsure). Your headphones should now be connected to your device and the announcement 'pairing successful - connected' or 'connected' should be heard.