EMS Electronic Stimulator: • EMS electronic stimulator for neck, back, arms, and legs. •Helps relieve muscle pain and fatigue. •Various modes, with varying frequencies and intensities to suit your personal needs. •Battery powered (not included). Power supply: 2 x AAA 1.5V Do not use if: • Pregnant women. •Cancer patients. •Hydrogel allergies. •Skin with wounds or burns. •People with electronic medical devices. •Patients with epilepsy. •Recently operated patients. •Patients with blood circulation disorders. •Do not use while driving or operating heavy machinery. ABS, EVA, metal alloy.