Outstanding acoustics with better audibility of high-frequency sounds (adult side, firm pressure)
Tunable diaphragm: hear high or low frequency sounds by slightly adjusting pressure on the chestpiece
Dual-lumen tubing: two sound paths in one tube eliminates the rubbing noise of traditional double tubes

Outstanding acoustics with better audibility of high-frequency sounds (adult side, firm pressure)
Tuneable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chest piece
Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes

Two-sided chestpiece with tunable diaphragms on both the adult and pediatric sides.
Single-piece tunable diaphragm is easy to attach, and easier to clean because its surface is smooth without crevices.
Pediatric side converts to a traditional open bell by replacing the single-piece diaphragm with a non-chill rim.

Two-sided chestpiece with tunable diaphragms on both the adult and pediatric sides.
Single-piece tunable diaphragm is easy to attach, and easier to clean because its surface is smooth without crevices.
Pediatric side converts to a traditional open bell by replacing the single-piece diaphragm with a non-chill rim.