Factory Reset the Transmitter
STEP 1: Turn on the Relay
STEP 2: Press and hold the at the same time for 6 seconds until the show RED & BLUE simultaneously for 3 seconds (it may look PINK). It should then go into pairing mode and the will alternate between flashing RED & BLUE.
Factory Reset the Headphones
Press and hold BOTH buttons simultaneously for 5 seconds until the LED turns PINK, indicating that the headphones have been reset. The headphones should then automatically enter PAIRING mode, and the LED will flash RED and BLUE.