Boyd's Hardside Waterbed HEATER-Blue Magic Vinyl solid state UL approved heater technology--1 Year Full Warranty for waterbeds with a water fill level of 8 or more inches An 18 gauge power cord and a 32 gauge nickel/copper flexible circuitry Includes a larger pad with 64 gauge thermal fused Duraflex vinyl Holds temperature to +/- 1/8 of a degree, state-of-the-art ultra-sensitive control with light