• Innovative lightweight chestpiece with pressure sensitive diaphragms provide a dynamic sound range. 

• Stainless steel stem improves sound conductivity and transmits sound with less noise. 

• Unique screw-on bell assembly (to hear low frequency sounds). 

• Extra thick-walled PVC tubing helps shield the sounds as they travel to the ear while blocking out ambient noise. 

• Internal binaural spring with sound conductor.