Model: 38-416-014
A Sprague Rappaport Dual-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.
Chestpiece: Single dual-membrane chestpiece made of zinc alloy for excellent sound conduction and little acoustic attenuation
Dual PVC Tube: Well-sealed sound conduction channel that is resistant to ambient interference
