User's Manual

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○音乐播放/暂停：单击 MFB 键一次、重复操作则暂停。
Music On/Pause: Press the MFB button once to play music, and press again to pause the music.
○音量加：每单击音量+按键一次，音量加大一档，加到最大有一声蜂鸣提示音。
Volume Up: Press the volume + button once to increase the volume by one grade. If the volume reaches the maximum, a
buzz sound is heard.
○音量减：每单击音量减按键一次，音量减小一档，减到最小有一声蜂鸣提示音。
Volume Down: Press the volume down button once to decrease the volume by one grade. If the volume reaches the
minimum, a buzz sound is heard.
○上一曲：在播放音乐状态，长按音量‘-’按键 1 秒，实现上首歌曲切换。
○Previous Song: If you press the volume- button for 1 second during music playing, the previous song is played.
○下一曲：在播放音乐状态，长按音量‘+’按键 1 秒，实现下首歌曲切换。
○Next Song: If you press the volume+ button for 1 second during music playing, the next song is played.
○三方通话：A 路通话中，有新来电，短按 MFB 键一次，挂断当前通话（A 路）并接通 B 路电话；A 路通话中，B 路
来电，双击 MFB 按键一次， 接通 B 路来电并保留 A 路通话，再次双击可切换 A/B 两路通话。三方通话中，短按 MFB