Award winning ergonomic design and excellent acoustic sensitivity deliver comfort and reliable diagnostic performance | Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds | Anatomically designed headset is angled to meet the path of the ear canal | Non-chill rim and diaphragm offers welcome patient comfort.Diaphragm Diameter 1.75 Inch Diaphragm Diameter (metric) 1.73 inches | Latex free materials for allergy sensitive users; Headset Material: Wide diameter aerospace alloy / Anodized aluminum

The 3M Littmann Master Classic II Stethoscope brings together award-winning ergonomic design and excellent acoustic sensitivity. It delivers reliable performance and comfortable use to professionals dedicated to providing the best patient care. 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...