16.Does the BTR5 have an indicator light? How to check various states and check low battery?

The BTR5 has no indicator light and the display shows the required information.

1. When Bluetooth is used normally, the display can indicate information such as pairing, connection, and Bluetooth format, and display the power and volume simultaneously.When the USB DAC is used, the sampling rate is displayed, and the power and volume are displayed synchronously.  

2. When the power is only left 1 grid, that is, the battery is in a relatively low state, it is recommended to replenish the battery. When the battery voltage is too low, it will automatically shut down. 

3. When charging, the charging icon scrolls. However, in order to protect the screen when the battery is turned off, the battery scroll icon will be off after 5 seconds.                                                                                     

4. Press and hold the power button for about 2 seconds to enter the setup menu. Short press on the power button can turn the page, short press on the volume '+-' button to select. In the menu state, press and hold the power button for about 2 seconds to exit the menu.