1. If the device is turned off, hold down the button for more than 2 seconds, and you will see a battery flash. When you see this flash, you can immediately release the button.

2. The battery charge is shown based on the LED color when the device is turned on or off. Green means full battery power remaining. Yellow means half the remaining battery charge. Red means low battery.

3. If you quickly press the button while the calming melody is playing, you will immediately skip the calming melody and start the calm pause from the program settings.

4. When turning on the device, hold down the button for 5-10 seconds and release. You will see and hear light and sound signals. This is necessary to test the volume and brightness of your settings. The device turns off automatically after playing the signals. The button does not work during testing.

5. When the device is working, press the button for more than 2 seconds, and the device will go into off mode. Before that, it will show the remaining battery charge as a color flash.

6. To connect to a computer, you need to hold down the button for 1 second and release. When it has been successfully connected, it will show a constant green light.

7. If the battery is low, you will see the red flash when you try to turn it on.