Massage the feet and calves, relax the whole body. Our patented CirQulation Figure-Eight Technology, with heat, circulates blood flow in your foot and calf, offering a deep kneading Shiatsu foot massage, and deeply-penetrating vibrating relief, bringing your body back into its natural equilibrium which promotes the body's natural healing power..Voltage : AC110-120V 60 Hz. HSA/FSA Approved Healthcare Investment: This clinical-grade recovery system is an HSA/FSA approved solution, providing a professional-grade alternative to expensive massages or ineffective vibrating pads. It is specifically designed as a non-drug solution for chronic pain sufferers and those with poor circulation. Targeted Relief - providing quick recovery for stressed feet and rejuvenating muscles. Hygienic removable washable sleeve inserts in the foot chambers help keep a clean and healthy environment for you and your family. Fits most people - With its enlarged foot wells, Human Touch foot and calf massagers can accommodate most foot sizes, up to men size 12. Relaxation & Stress Relief – The Perfect for Men or Women, providing the opportunity to unwind after a stressful day. Bring the massage to your home and feel instant stress relief.