BTHS-AS20 User Manual - English

1.Headset overview


2.Working with mobile phone

It is important to pair the headset with your Bluetooth enabled mobile phone for first time use.

2.1 Pairing one phone:

Step 1: Ensure the headset is off.

Step 2: Press and hold the power button (about 5 seconds) until the LED blinks blue and red alternately, you will hear the voice prompt “Power on” and “Pairing”.

Step 3: Active Bluetooth on your phone and select “Avantree Clari Air” to connect, once connected you will hear the voice prompt “Connected”.

2.2 Connect with two mobile phones simultaneously

STEP 1 Connect headset with the first phone as above. Then turn off Bluetooth of the first phone.

STEP 2 Connect headset with the second phone as above. Then turn off the headset.

STEP 3 Turn on Bluetooth of the first phone. Then turn on the headset.

STEP 4 The headset will automatically connect to two phones. Otherwise it will automatically connect with the second phone, after that please tap from the first phone to manually connect it.


We recommend that you try each ear tip (small, medium and large), perform a sound check and choose the ear tip that gives the best sound experience.

STEP 1 Hold the headset as shown, green color ring on the left side and red one on the right.

STEP 2 Put the ear buds in your ears, adjust the position for maximum comfort and fit.

STEP 3 The ear loop can be rotated, rotate it to adjust the angle to achieve optimal fit and stability.

STEP 4 Drape the ear buds around the back of your neck and enjoy.

Note: Make sure your phone is in an armband / pocket / handbag on the right of your body. Otherwise, disconnection might be caused by your body blocking the Bluetooth signal.

4.How to use



1.Some function may require to start the media player to play music at first.

2.Press  or to turn volume up or down, you will hear beep once reach the maximum or minimum volume.

5.How to reset

You may need to reset Clari Air if it is not working as expected. When Clari Air is reset to factory default settings, all the paired device information will be erased.

Under standby mode (power on but not connected), press V+ and V- buttons simultaneously for about 5 seconds, LED indicator flashes Blue & Red together (seems like pink) 2 times quickly and you will hear "disconnected", "power off", then successfully clear all paired list, the headset will enter pairing mode automatically after power on next time.

6.Product Specifications

Supported Profiles: Headset, Hands free, AVRCP, A2DP

Supported audio codec: SBC, AAC, APTX

Operational range: Class 2, up to 10 meters

Play time: up to 5 hours

Charge time: 1.5 hours

Weight: 21g

Earbud size: (L) 25mm * (D) 12mm

NOTE: The talk and standby time may vary when used with different mobile phones or other compatible Bluetooth devices and are also dependent on different usage styles, settings and operating environment.

7.How to charge

When the LED blinks red, you should recharge your headset. Remove the Micro USB port protector and charge the headset via the supplied Micro USB cable. It normally takes about 1.5 hours to fully charge the battery. The LED will stay red when charging. Once fully charged, the red LED will turn off and the blue LED will turn on.

Charging requirement:You can plug our supplied Micro USB cable to your own USB chargers (wall charger/travel charger/car charger, etc) with==5V/500mA-2A or to a PC/Mac USB port. It is OK to use most mobile phone chargers on the market.

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