The chairs have built in speakers that allow you play either via Bluetooth or Aux through the chairs. It also has a built in transducer that allows you to feel whatever the frequency is of what your listening to throughout your body.
Features: Bluetooth, 3.5 mm audio input, vibroacoustic sound/vibration, tactile transducer. This is the full electronic vibroacoustic version, not the “no electronics” version. It is clean, fully functional, and ready for use.
