What to do if the audio quality is poor from Samsung Galaxy Watch Active2 to Bluetooth headphones

Restarting your watch and headphones could solve the problem in poor audio quality.
 

• If your watch is connected to a phone, restart the phone.
• Once the devices are powered back on again, check if they needed to be additionally charged.

You may try testing by moving the devices closer if the audio quality improves in better way.
 

• The watch and headphones must be within Bluetooth connection range (10 m).
  The distance may vary depending on the environment the devices are used in and if there are obstacles, such as metals, walls, and electrical equipment between the devices.

• Make sure there isn't any other Bluetooth devices being connected at the same time.
   

Other tips to improve sound quality:

• Wireless network services may be disabled due to issues with the network of the service provider. Make sure to keep the devices away from electromagnetic waves.
  
• Take note that the distance may vary depending on the environment the devices are being used in.

You can also try pairing a second pair of headphones that is working properly or not. 

Step 1. Press the Power key.
Step 2. Navigate to and tap Settings > Connection > Bluetooth.
Step 3. Tap on Bluetooth audio.
Step 4. Tap on Settings icon next to the connected headphones.
Step 5. Tap on Unpair to disconnect the headphones.
Step 6. Tap on Scan, and then tap the second headphones you want to pair. 

• If the second headphones are working properly, but the original headphones still have poor audio quality, contact the original headphones' manufacturer for further support. 
• If you're experiencing the same issues with the second headphones, reset the watch.

If you tried all the tips above and the problem still persists, you can reset your watch in order to enhance poor audio quality. 

Step 1. Go to Settings > General > Reset.
Step 2. Tap on Back up data at the bottom of the screen to avoid data loss.
Step 3. Tap Reset.

Once the reset completes, setup your watch and reconnect it with the original headphones. You can find more about 'How to pair Bluetooth headphones to your Samsung Galaxy Watch Active2' with Samsung Support.