Pair the First Device
Step 1: Get the C81 into Bluetooth Pairing Mode.
Press & Hold the MFB button on C81 until the LED indicator starts flashing WHITE&BLUE rapidly.
Step 2: Get the headphones into Bluetooth Pairing Mode as well.
Avantree Headphones/Speakers/Receivers: The LED Indicator on the headphone/speaker/receiver flashing RED & BLUE.
Non-Avantree Devices: Look it up by Brand
Step 3: Keep your Device close to C81, and give them a few seconds.
It takes a few seconds to connect.
Once successfully connected, the flashing on the C81 will turn SOLID BLUE.
Pair the Second Device
Step 4: Repeat steps 1 through 3 again.