- External Noise Reduction (ENR) Tube Technology. Stainless steel springs encapsulated in Neoprene isolate the internal air columns from outside disturbances. This patented technology acts to minimize external noise to provide for purer auscultation sounds. GELseal™ Eartips to help ensure an acoustic seal in the ear canal and a comfortable fit.
- SafeSEAL™ Soft Stethoscope Diaphragms which contain an antimicrobial compound to suppress the growth of bacteria and mold on the diaphragm. They are designed to improve acoustics and to feel warm on the patient's skin. Traditional hard diaphragms are also included.
- Anti-Slip ring on the tubing provides a high-friction point for greater stability and to prevent slippage when wearing a stethoscope around the neck.
- Convenient ID tag with an area for writing personal identification information.
- 27" overall length.
- Latex-Free.

CLASSIC MODEL FEATURES: Features a double-sided, rotating, stainless steel chestpiece.
CLASSIC TITANIUM TI-LITE MODEL FEATURES: Features a double-sided, rotating, titanium chestpiece. The lightweight titanium chestpiece is 40 percent lighter than stainless steel.
STAFF MODEL FEATURES: Tunable diaphragm, stainless steel, double-sided rotating chest piece. Staff Cardiology model can be used as both a traditional double-sided stethoscope or as a tunable stethoscope by varying the pressure on the diaphragm side.
MENTOR MODEL FEATURES: The Mentor Cardiology stethoscope has a single-sided, stainless steel chestpiece with a tunable diaphragm. The Mentor Traditional stethoscope has a single-sided, stainless steel chestpiece with a tunable diaphragm.

ALL PURETONE CARDIOLOGY STETHOSCOPES FEATURE:
- Double-lumen tubing
- Rotating binaurals
- Five-year warranty

ALL PURETONE TRADITIONAL STETHOSCOPES FEATURE:
- Single-lumen tubing
- Three-year warranty