Audiphones Stethoscope, Accessory for Professional Hearing Aids for Home Use (Light Blue)
Naroote
Audiphones Stethoscope, Listening Test Stethoscope, Volume Noise Detection Hearing Aid Stethoscope Easy to Use Binaural for Home (Light Blue)
RTLR
Volume Noise Detection Binaural Metal Audiphones Stethoscope Lightweight Accessory, Listening Stethoscope (Light Blue)
Betued
The Audiphone: A New Invention That Enables the Deaf to Hear Through the Medium of the Teeth, and the Deaf and Dumb to Hear and Learn to Speak (Classic Reprint)