Blue Magic 300W Solid State Hard Side Waterbed Heater, High Watt Hard side waterbed heater comes complete with a solid state heater control and a premium wire alloy waterbed heating pad Efficiently heats your waterbed, maintaining a constant temperature accurate within 1/8 of a degree 300 watts of power capable of heating any size waterbed up-to a California King size bed; Larger pad with 64 gauge thermal fused Duraflex vinyl No moving parts in the heater allows for precision temperature control; Easy to use and quick to install Protected with a thermal safety fuse; ETL Certified for performance and safety