Operating the Controls
FM Radio Mode
In "Key Action", 
indicates pressing the button for a short second and 
indicates pressing the button for more than 1 second.
| Button Key Action | FM Mode | FM Preset Mode |
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| Enter Frequency preset mode | Exit Frequency preset mode | |
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| Inefficacy | Inefficacy |
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| 3S | Turn power off | Turn power off |
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| Decrease FM frequency | Move to previous preset |
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| Rapidly decrease FM frequency | Automatically move to previous |
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| preset continuously |
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| Increase FM frequency | Move to next preset | |
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| Rapidly increase FM frequency | Automatically move to next |
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| preset continuously |
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| Volume up | Volume up |
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| Volume up continuously | Volume up continuously | |
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| Volume down | Volume down |
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| Volume down continuously | Volume down continuously |
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| Enter FM Menu | Enter FM Menu |
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| Enter Preset Mode | Enter Preset Mode |
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| FM EQ | FM EQ | |
| Recording FM radio | Recording FM radio |
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Earphones function as the antenna.
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