JM21
The JM21 doesn't support fast charging.It is recommended to use a 5V2A charger for charging. Battery capacity: 2400mAh Battery life: 12 hours (3.5mm s...
Tue, Jun 17, 2025 at 5:48 PM
1. 3.5Output selection PO (Power output), generally used when connecting to earphones and speakers LO (Line out), generally used when connecting to power ...
Tue, Jun 17, 2025 at 5:53 PM
1.Sample rate display With it turned on, the sample rate of the currently playing song will be displayed. 2. Dark theme With it turned on, the theme will...
Tue, Jun 17, 2025 at 5:53 PM
1.System navigation Gesture, 2-button and 3-button navigation are available. 2.Power-off timers Sleep: when the set time is up, the JM21 will turn off au...
Tue, Jun 17, 2025 at 5:54 PM
How to change the language on the JM21? 1. Go to the menu of Settings->System->Languages and input->Languages. 2. Tap "Add a language" ...
Tue, Jun 17, 2025 at 5:54 PM
Setting item Indicator Instruction Brightness Custom Brightness level 0-100 Adjustable Working state Constantly on Red indicator on...
Tue, Jun 17, 2025 at 5:56 PM
JM21 does not support DK1 Pro. If you really need to use it, you need to turn off the charge switch of DK1 PRO and try again.
Tue, Jun 17, 2025 at 5:57 PM