This article will help you decide to choose between the Cardiology III and Cardiology IV stethoscope by Littmann. Both are considered to be high-quality stethoscopes, as the Cardiology IV is an updated version of the Cardiology III.

Therefore, both models offer similarities in the way that they are designed. However, there are some differences which set them apart that will assist in determining which stethoscope is best for your individual or organisation’s needs.

Choosing a stethoscope that is suited to your needs can be daunting, especially when there are so many options with similar features. These two stethoscopes are rated as the best amongst Littmann’s products, and its similarities and differences will be outlined below.

Comparison of Cardiology III and Cardiology IV

Acoustic Performance

For those who are looking for high-quality acoustic performance, the Cardiology III would be a better option as this is its selling point.


Both stethoscopes have a dual tubing design, and are made of hypo-allergenic materials. The dual tubing design provides precise sound performance and reduced interference. The Littmann Cardiology III is made of a rubberized tubing while the Cardiology IV is made of synthetic tube.


Both stethoscopes are made with a tunable diaphragm, and these means the two stethoscopes work similarly. However, the Cardiology III allows a better clarity of sound while the Cardiology IV has a two-piece diaphragm on each side of the chestpiece.

Ear Tubes & Piece

Both stethoscopes are made with high-quality ear tubes which are very comfortable to use. The earpieces minimize distortion and allow sound to be reflected easily.


The Littmann Cardiology III comes with a five year warranty while the Cardiology IV comes with a seven year warranty.

Price Range

While both stethoscopes range on a pretty expensive scale, the Littmann Cardiology IV is far more pricey, approximating at €230. The Littmann Cardiology III, on the other hand, can be purchased for €130.

Colours & Finishes

The Littmann Cardiology III is available in 16 colors and 6 finishes, while the Littmann Cardiology IV is available in 7 colours and a stainless steel finish. Those who are seeking more versatility in their stethoscope should therefore opt for the Cardiology III.

Weight & Length

Both stethoscopes are available in a smaller or larger size, at 22 or 27 inches. However, Cardiology III is a little heavier in comparison to Cardiology IV with a weight of 175 and 180 grams compared to 167 and 177 grams.

Now that the similarities and differences between these two stethoscopes have been explicitly explained, we hope that you will be able to choose your next stethoscope without any issues.

Find the best stethoscope for doctors here.

Last Updated on May 14, 2021

John Erick

John Erick is a national advocate for people with disabilities. John has written and blogged to help people with disabilities get the best life possible.

A disability can happen at any time, so he wants to be prepared! He also writes about his experiences living with cerebral palsy and hopes that his writing will inspire others who are disabled or know someone who is disabled.