How to Enter Bluetooth Pairing Mode
Step 1: Entering Pairing Mode on the AS20L Headphones.
Make sure that the headphones are off. From there, hold the power button for about 5 seconds until the LED indicator alternates between flashing RED & BLUE.
Note: If you are turning on the headphones for the first time, the headphones will automatically go into pairing mode (the LED will flash RED & BLUE.)
Step 4: Connect the Headphones.
In the Bluetooth settings, locate "Avantree AS20L". If the headphones are in pairing mode, it should say "Ready to pair" underneath "Avantree AS20L". Click "Pair" to connect the headphones.
After connecting the headphones, the LED on the headphones will turn SOLID BLUE. On your device, there may be a pop-up indicating that you are connected. Otherwise, you can check the Bluetooth settings and "Avantree AS20L" should appear as connected.