耳机连接手机后，您可以通过在终端设备直接调节音量大小，也可以在Nothing X app中设置"PINCH & HOLD"或"DOUBLE PINCH & HOLD"的手势进行耳机音量的控制：
**Pinch & Hold for 1 second, adjust the volume (after triggering and in Pinch &hold state, the volume changes by one bar every 0.9S, and stops rising when the Pinch control is released)