Electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays; Electronic light therapy apparatus for the skin; Hematimeters; Light emitting devices, namely, lamps and LED devices for treatment of a variety of skin conditions; Hemodialysis apparatus; Respiration monitors; Medical devices, namely, pulse oximeters; Telemetry devices for medical applications; Medical devices for Kegel exercises, namely, pelvic floor exercisers for use to treat symptoms of urinary incontinence and for therapeutic purposes; Lasers for the cosmetic treatment of the face and skin; Laser therapy helmets for treating alopecia; Heart monitors; Prosthetic ligaments; Massage apparatus; Health monitoring devices consisting of blood pressure monitors, thermometers and pedometers