This 120 watt, low-intensity waterbed heater should be used for deep fill (8" water depth), and mid fill (6" water depth) waterbeds, to be placed on foam or fabric.  It comes with a wire alloy element, control box, instructions, and a 5 year warranty. Backlit readout, accurate, and magnetic field reduced. Not recommended for tube-type, or shallow fill waterbeds. Don't forget to replace your water conditioner.  Free Shipping!