Everything works on this machine perfectly except for the Bluetooth speakers. The sound comes and goes when using the settings especially the waist and back functions. I tried different devices and had the same issue. There seems to be some sort of interference or maybe the speakers are malfunctioning. It may be just an issue with this unit. However, it doesn’t effect the overall massage experience. If you need to listen to music, you can connect your AirPods or another Bluetooth speaker. The speakers are irrelevant. That’s why I still give this massage chair five stars. The complete massage experience is amazing.