Charging; Clear The Headphones Pairing History; Troubleshooting - Avantree BTHS-AS90 Manuel D'utilisation

You may use the supplied 3.5mm audio cable to connect to a non-Bluetooth device.
Note: The control buttons, the built-in mic, and the detachable boom mic DOES NOT work in wired mode.
Note: If you wish to use the ANC function in wired mode, please turn on the headphones first.

Charging

When the LED starts blinking RED once every 10s, or when you hear "beep" / prompts sound, you should
recharge your headphones. Please plug it into a USB wall charger (DC 5V / 0.5-2A) or a powered USB port via the
micro USB cable that we provided.
Normally it takes 2 hours to fully recharge. The LED indicator on the headphones will remain RED while charging
and automatically turn o when the charging is complete.

Clear the headphones pairing history

Turn on the headset (Non-calling Status.) Press and hold both and for 5 seconds until the LED blinks
PINK for 2 seconds. Now the pairing history has been cleared. The headphones will enter PAIRING MODE
automatically (LED blinks Blue and Red alternately) and you'll be able to pair it with the target Bluetooth device
again.

Troubleshooting

No sound with PC?
• Set Avantree AS90 as the default device or output device on the PC.
• When using AS90 to make VOIP calls through apps, please set AS90 Hands-Free as Microphone and Speakers
device.
No sound with Bluetooth transmitter when watching TV?
• Ensure Bluetooth transmitter and headphones are connected properly.
• Check to ensure audio source is functioning properly
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