Omron HV-F021 Electronic Nerve Stimulator is used for providing drug-free pain relief by blocking pain signals, releasing natural painkillers (endorphins), and improving blood circulation through muscle stimulation. Its compact design fits comfortably in one hand for on-the-go therapy. The device features intuitive controls with a large LCD displaying six preset body area modes—Arm, Back, Leg, Foot, Joint, and Shoulder—for targeted relief. With up to 15 intensity levels and washable, reusable pads lasting up to 150 uses, it provides effective and convenient pain management.