How to Use in MP3 Mode(white noises)? - Slumber

The Slumber will enter MP3 mode and begin playing the built-in white noises automatically upon first use. If not, press the “MP3/AUX” button once to enter MP3 mode manually. You can change the playback mode by pressing & holding the “MP3/AUX” button until the corresponding  indicator turns solid white.

The Slumber has 4GB of onboard storage for use in MP3 mode. In addition to the 10 included white noise options, you can upload your own tracks by connecting the Slumber to your PC via the included USB C cable. Transfer your chosen files(Slumber supports music files in MP3/WMA/WAV format) to the “Avantree Slumber” disc and enjoy!