601 features:
Threaded chestpiece drum allows rapid conversion from a pediatric diaphragm to an adult bell; extra deep bell for lowest frequency response; ultrasensitive diaphragms; non-chill bell and diaphragm retaining rims for patient comfort; large internal bore stainless steel binaurals are fixed at a 151/4 angle for greater comfort; custom molded bi-lumen 19" PVC tubing stays soft and flexible; extra-thick tubing walls minimize noise; double leaf internal spring construction reduces bulk and prevents kinking if folded and complete with accessory case with the adult bell, 2 spare diaphragms, and two sets of eartips. Available in Navy