Nerve stimulator apparatus; Neuromuscular stimulator apparatus; High-frequency neuromuscular stimulation device; Wearable therapeutic and medical device for nerve stimulation; Wearable neuromuscular stimulator device; Wearable device for neuromuscular stimulation for the management and treatment of symptoms of restless legs syndrome and periodic limb movement disorders; Medical apparatus, namely, therapeutic devices for managing and treating the symptoms of restless legs syndrome and periodic limb movement disorders; Biomedical devices for medical purposes, namely, bioelectrical signal processors and electronic neuromuscular stimulators and recorded software for use therewith, sold together as a unit for stimulating nerves, recording nerve activity and modulating nerve activity; Nerve stimulator apparatus and recorded software for use therewith, sold together as a unit; Wearable medical monitor devices for measuring biometric data for medical use and recorded software, for use therewith, sold as a unit