Thermophore MaxHeat Plus 14 x 27 Large Shampoo Showers Bathtubs 5v instruments heads * Adjustable Color:Red 5v instruments heads * Adjustable rheostat control * Safety switch to prevent accidental draining of battery * Metal head connectors for durability * Direct plug in style * 100 130v 50 60 Hz * Model WA71000C uses 3 HIGH PROFILE 3 HIGH * 16 x 16 * Customized fit through the simple push of a knob * The revolutionary ISOFLO© Memory ControlTM offers shape fitting capabilities while the user is seated allowing quick and easy on demand adjustment to maximize function * The QUADTRO SELECT Cushion allows for quick simple position selection for every user while seated * Stability is enhanced by locking the air into place in each of the four quadrants * Easy to handle and carry at just 3 Just hold down or press on for heat and release or press off to cool depending on the style *MaxHEAT Plus units let you add additional water in dry environments * Moisture helps the intense heat penetrate even more deeply relieving pain relaxing muscle spasm and increasing rejuvenating circulation * Two switch options put you in total control of the heat level minute by minute