20.Instructions for Settings->Global menu

1.System navigation

Gesture, 2-button and 3-button navigation are available.

2.Tape mode theme

Select the theme after entering Tape mode.

3.Nultifunction button

1.In Player mode: Add to Favorites (default option), Play next song randomly (randomly play the next song according to random play rules), Play/Pause, Delete currently playing song, Switch filter (cyclically), Switch equalizer (cyclically), Enter USB DAC Mode, Enter Bluetooth Receiving Mode, Lock screen/Wake up, No function

2.In Bluetooth Receiving mode/USB DAC mode, the multifunction button is forcibly set to: No Function.

Note: This button only responds in Android mode/Pure Music mode, and some functions only apply to FIIO Music.

4.Power-off timers

Sleep: when the set time is up, the M21 will turn off automatically. The sleep time can be set as any integer values between 0 and 120.

Idle poweroff: the M21 will automatically turn off when the timer reaches the set time for idle poweroff when there is no operation or playback. During this process, the timer will restart if there is any operation or playback. The idle poweroff time can be set as any integer values between 0 and 24h. (Note that this function will be disabled when it is set to OFF.)

5.HOLD switch settings

If the HOLD switch is turned on, you can enable/disable any buttons, touch screen.

6.Volume setting

a.System Maximum volume setting: all other volumes will be lower than this volume after setting it.

b.Power-up default setting:set the volume of the system when the device is turned on.

7.Rotate screen

The display page will rotate 180° if it is enabled.

8.Double tap to wakeup

If it is enabled, double tap the screen can wake up the M15S when it is under off or in sleeping states.