Assistive listening device for the hearing impaired; Digital hearing aids; Electric hearing aids; Electrically-operated hearing aids; Electromedical rehabilitative and pain management products for clinical and home use, namely, electrical nerve and muscle stimulators, ultrasonic stimulators, magnet therapy stimulators and laser therapy stimulators; Electronic muscle stimulators for medical purposes; Hearing aids; Hearing aids for the deaf; Hearing aids with a noise cancelling function