How to Use in SD Card Mode - Boombyte – Avantree Support

Insert a micro SD card (not included) while the radio is on, and it will automatically switch to microSD mode.
If you insert the card while the radio is off, the radio will not automatically switch to microSD mode. After turning it on, press the "MODE" button to switch to micro SD mode.
The Boombyte supports MP3 / WMA / WAV file formats, and the max storage capacity of the SD card is 32GB.
To configure repeat/shuffle settings, press the "gear / OK" button to enter the settings menu and press it again to select "Repeat / Shuffle." Use the "<SEEK / SEEK>" buttons to choose your desired option and press the "gear / OK" button once to confirm.