How do I put the S10 speaker units into pairing mode?

With the headphones turned off, press and hold the joystick for 6 seconds until the LED blinks rapidly.

Alternatively, when the headphones are turned on, hold the joystick to the right for 5 seconds until the LED blinks rapidly.

This means that the product is in pairing mode and should appear on your device as AIAIAI TMA-2 (S10).