Location of waterproof toe-touch control helps prevent accidental spills : 3 interchangeable accunode, accupressure, and roller massage attachments : Smart Heat keeps water warm for soothing relief : Refreshing bubbles relax and revitalize sore, achy feet : Multiple toe-touch settings for Smart Heat, massage, and bubbles : Interchangeable reflexology rollers provide accupressure relief and soothing massage