Combined double chest piece with two different frequency ranges to choose from: A high-quality membrane on one side and a conical acoustic head on the other side.
Combined double chest piece with two different frequency ranges to choose from: A high-quality membrane on one side and a conical acoustic head on the other side.
Single-tube construction with excellent sound transmission.
High-quality membrane, 44 mm diameter for excellent acoustic performance and sound transmission.
Cone diameter 30mm.
