KOHLER K-1849-VB-0 Underscore 5-Feet Left Drain Soaking Tub, White VibrAcoustic calms and soothes with sound vibration technology Plug in your smart phone, tablet, or MP3 player via auxiliary-in cable. Add your own receiver to stream wirelessly via Bluetooth Six concealed speakers send sound waves through the water to gently massage the body Functions as a hydrotherapy bath when full of water and a stereo system when empty