Dual TENS & EMS Technology: Lifechill foot stimulators are designed to alleviate foot pain, improve circulation, and strengthen muscles. TENS technology uses low-voltage impulses to disrupt pain signals, offering relief from neuropathy, arthritis, and chronic foot pain. EMS stimulates muscles to enhance circulation, reduce swelling, and relieve muscle tension in the legs and feet. Customized Comfort with Heat: Enjoy a personalized massage with 3 heating levels, 10 modes, and 20 intensity settings. The timer is adjustable from 15 to 60 minutes. Tailor each use to your preferences for soothing warmth and muscle relief.