Assistive listening device for the hearing impaired; Apparatus using a light emitting diode (LED) for performing aesthetic facial treatment procedures; Brushes for cleaning body cavities; Electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays; Hearing aids; Massage apparatus and instruments; Relaxation therapy apparatus using light, sound, and vibration; Cases fitted for medical inst...