7. Is there a song limit?
The player comes with 16GB SD card, and the player supports SD card up to 256GB. In this
way, the player can store about 15000 songs.
8. Can you adjust the volume on the device when using Bluetooth?
If your headphones are Bluetooth and have volume adjusting button, then yes.
9. Can this player work with iTunes? Is it compatible?
No, unfortunately, it is doesn’t compatible with iTunes. This functions more like an external
hard drier. You simply plug it in, an option to open it as a folder pops up, and you simply drag
and drop your music.
Please visit the website for your question:
https://www.lifewire.com/do-i-need-an-ipod-to-play-itunes-songs-2438427
10. How can the battery be replaced?
This player is sealed, and you can’t change the battery yourself.
11. How to set shuffle playing mode?
Enter F20 player > Setting > Play mode
Here you can choose to play in order / repeat all / repeat 1 / shuffle.
12. How to enable the Bluetooth function?
Enter F20 player > System setting > Bluetooth setting > turn on Bluetooth function.
Turn on Bluetooth function on other Bluetooth device, and pair the device, you’ll see the
paired devices listed below.
Scroll the wheel or press / to choose from paired devices; press button to
connect/disconnect; press “M” button and choose “Yes” to delete the paired device.
13. Does the player have a bookmark?
Yes, the player does support bookmark function:
Enter F20 player > setting > memory play.
Here you can choose last song / last position / close this function.
14. Is it possible to create a playlist on the go without a computer?
Yes, but you can only add songs to “My favorite” list, and you can’t customize the playlist
name without a computer.
15. When would you adjust the gain setting rather than volume?
I have my gain setting on high and use the volume to control the audio output from aero to
max. High setting gives you a higher output. I think the gain setting is to adjust for different
headphones used with this player. Headphone impedance can range from 8 ohms to 64 ohms.
The 8 ohms would be louder at the same gain setting as 64 ohms.