Sprague Rappaport Single-Tube
A Sprague Rappaport Single-Tube with a dual-membrane, zinc alloy chestpiece where the larger membrane is sensitive for sound collecting and the smaller membrane may be used for children! Read below for more features!🩺💙💓 Chestpiece: Single dual-membrane chestpiece made of zinc alloy for excellent sound conduction and little acoustic attenuation
🔊 Single PVC Tube: Well-sealed sound conduction channel that is resistant to ambient interference