First of all, in the speaker state, press and hold the "M" key until the speaker makes a "Didi Didi" sound, that is, enter the setting mode. Then press the "m" key until the speaker gives out a "time" prompt tone, indicating that the alarm clock setting mode is entered. Next, press the "+"key or "-"key at the top of the speaker to select the serial number of the alarm clock to be turned off. Press the "M" key again to enter the alarm clock detailed setting interface. Press the "M" key until the sound box sounds "alarm clock", indicating that the alarm clock switch setting interface is entered. Finally, press the "+"key or the "-"key to turn off the switch, that is, turn off the alarm clock. Finally, press the "M" key to exit the alarm clock setting mode.