Get this Care Relief Bundle of TENS + Heat Massager HV-F311-CAP and an Extra Gel Pads HV-F311-CAP • Combo Therapy with HEAT + TENS • Compact Design and Portable • For 6 Body Area Modes • 3 Massage Modes: • 20 Intensity Levels • Simple Operation • 3 Therapy Choices • Rechargeable Battery HV-PAD-3AP GEL PAD OMRON Gel Pads includes 4 pairs that can be used up to 30 times on the OMRON HV-F311 Heat +TENS™ Unit before replacing. Adhesive gels designed for immediate heat therapy.