You can adjust the volume of the low-tone OpenFit headset through the volume key of the mobile phone.

You can adjust the volume of the low-tone OpenFit headset through the volume key of the mobile phone. The volume of the earphone is synchronized with the mobile phone. Just use the volume button of the mobile phone to adjust the volume. To increase the volume, you can press the volume increase key; To lower the volume, you can press the volume down key. Through the operation of the volume key of the mobile phone, you can easily adjust the volume of the low-tone OpenFit headphones to get a better listening experience.