3M Littmann Master Cardiology Stethoscope

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Color:Hunter Green Tube |  Style:Machine Stainless Steel Chestpiece

Product Description

The 3M Littmann Master Cardiology Stethoscope is characterized by the best acoustic response in the Littmann mechanical stethoscope line; with a tunable diaphragm, dual-lumen tubing, and a precision, ergonomically designed, stainless steel chestpiece. The colors shown online are approximations. We have made every effort to show the best possible match to the color of the actual product. However, some variation is expected, due to differences in both lighting and monitor calibration.

The power to learn in the palm of your hand with our free educational app.

Practice your auscultation skills anytime, anywhere with the 3M Littmann Learning Institute app, free with the purchase of a 3M Littmann Stethoscope. The app allows you to practice and improve your auscultations skills, which can result in better performance in school or your practice and provide better patient outcomes.

With the app, you can:

  • Develop diagnostic skills using patient scenarios
  • Listen to real heart and lung sounds to recognize different conditions
  • Track your progress
  • Test your knowledge

Unlock the full content of the app with the serial number found on the chestpiece of your Littmann stethoscope.

Go to the iTunes App Store or Google Play to download the free app and start training today!

The 3M Littmann Classic III Stethoscope offers high acoustic sensitivity for exceptional performance when doing general physical assessments. It features dual tunable diaphragms and an updated design that is easier to clean and maintain. The colors shown online are approximations. We have made every effort to show the best possible match to the color of the actual product. However, some variation is expected, due to differences in both lighting and monitor calibration.

From the Manufacturer

The 3M™ Littmann® Master Cardiology™ Stethoscope is characterized by exceptional craftsmanship by its handcrafted stainless steel chestpiece and the best acoustic response in the Littmann Cardiology line. The innovative engineering of its tunable diaphragm delivers versatile performance for medical professionals to identify, listen to, and study heart, lung, and other body sounds. 3M Littmann tunable diaphragm technology delivers significantly enhanced listening capability over conventional acoustic stethoscopes. Switching between bell and diaphragm modes is as easy as a simple pressure change on the chestpiece so there is no need to remove, index and replace for same-site auscultation. This time-saving feature allows the healthcare provider to focus on the patient. Resilient tubing folds tightly for pocket portability and retains its shape while patented Snap Tight Soft-Sealing Eartips help form an effective acoustic seal. The anatomically correct headset is angled to channel sound and enhance listening comfort while the nonchill rim and diaphragm provide patient comfort. The Master Cardiology Stethoscope is made in the USA; product and package are latex-free and come complete with small and large eartips, Special Procedures Adapter, and instructions.   



Cardiology/High Performance

Chestpiece Finish

Polished Stainless Steel

Chestpiece Technology

Single sided

Chestpiece Weight

90 Gram

Diaphragm Diameter

1.75 Inch / 4.4 cm

Diaphragm Material


Diaphragm Type

Tunable Diaphragm

Eartip Type

Soft Sealing

Extra Eartips

Yes - two extra pairs

Headset Material

Wide Diameter Aerospace Alloy / Anodized Aluminum


27 Inch / 69 cm


Master Cardiology™

Net Weight

185 Gram


Anesthesiologist, Cardiologist, Emergency Physician, EMT/EMS, Family Practitioner, Internist, Medical Student, Nurse, Pediatrician, Respiratory Specialist


Adult, Infant, Pediatric



Special Adaptors


Stethoscopes are diagnostic instruments that amplify sounds made by the body from the heart, lungs, abdomen and intestinal tract, or other body sites. A stethoscope is used to detect and study internal systems, such as fetal development, blood flow or blood pressure (BP), and respiration, and sounds, such as cardiac, venous, arterial, pulmonary, and uterine. Stethoscopes typically have Y-shaped rubber tubing that allows sound to travel from the chestpiece to the eartips. An open bell detects low frequency sounds, and a diaphragm detects high frequency sounds. A stethoscope can come as single, double (dual), or triple-head. Binaural stethoscopes are used with both ears, and single stethoscopes work with one ear. Differential stethoscopes are double-head, and allow sound comparison between different body sites. Non-electronic, also called mechanical or acoustic stethoscopes, transmit sound through hollow tubing to a listener’s ear. Stethoscopes are used by students and a wide array of healthcare providers including physicians, nurses, and veterinarians, as well as specialists such as cardiologists, pediatricians, gastroenterologists, pulmonologists, and respiratory professionals in hospital, clinical, or other healthcare facilities.  

For more than a century, 3M has applied innovation and technology to improving our customers’ lives and supporting their business goals. Today the company, from its headquarters in St. Paul, Minnesota, serves industrial, healthcare, commercial customers and consumers in nearly 200 countries. That same spirit of technical innovation is built into every 3M Littmann product to provide healthcare professionals with precision, inventive design, and high acoustic sensitivity for exceptional performance. The 3M brand, across thousands of products, represents consistency, superior quality, and value.

What’s in the Box?

  • Master Cardiology stethoscope
  • Special Procedures Adapter
  • (1) Pair Soft Sealing Eartips, Small
  • (1) Pair Firm Eartips, Large
  • Instructions

Manufacturer Contact Information


See more
  • Chestpiece delivers Littmann’s highest acoustic performance along with handcrafted, eye-catching design
  • Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds
  • Two-in-one tube design (dual lumen) eliminates noise interference from two external tubes rubbing together
  • Special-Procedures Adaptor (included) for infant or pediatric auscultation adds versatility to the instrument
  • Anatomically designed headset is angled to meet the path of the ear canal

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