• 3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope
  • 3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope

    • Diagnose and make decisions with confidence
    • Hear subtle changes in patient status
    • Useful in critical care and challenging environments such as the ED, ICU, Cardiac ICU, step-down unit and other dynamic locations
    • 7-year warranty

    Hear more with the Cardiology IV Stethoscope.

    The Cardiology IV stethoscope’s advanced features help you achieve more.

    • Littmann Cardiology IV Stethoscope better audibility.

      Better audibility of high-frequency sounds¹ helps you learn more about your patient’s condition.

    • Littmann Cardiology IV Stethoscope single-piece tunable diaphragms.

      Single-piece tunable diaphragms let you hear high and low frequency sounds on both the adult and pediatric sides of the chestpiece.

    • Littmann Cardiology IV Stethoscope pediatric side.

      Pediatric side converts to an open bell. Just remove the single-piece diaphragm and replace it with a non-chill rim.

    • Littmann Cardiology IV Stethoscope open bell.

      Open bell stays clear of dirt and debris by covering it with the small diaphragm.

    • Littmann Cardiology IV Stethoscope dual-lumen tubing.

      Dual-lumen tubing combines two sound paths in one tube, eliminating the rubbing noise of traditional double tubes.

    • Littmann Cardiology IV Stethoscope next-generation tubing.

      Not made with natural rubber latex or phthalate plasticizers, next-generation
      tubing lasts longer
      with improved resistance to skin oils and alcohol and is less likely to pick up stains.

    • Littmann Cardiology IV Stethoscope 7 year warranty.

      Seven-year warranty.

    ¹Adult side, firm pressure. Compared to the 3M™ Littmann® Cardiology III™ Stethoscope.

    • Diagnose and make decisions with confidence
    • Hear subtle changes in patient status
    • Useful in critical care and challenging environments such as the ED, ICU, Cardiac ICU, step-down unit and other dynamic locations
    • 7-year warranty
    • Ergonomic and high profile construction; 40% larger chestpiece and 60% deeper bell than the 3M™ Littmann® Classic III™ Stethoscope
    • Designed for use with adult and pediatric patients
    • Tunable, dual-sided stainless steel chestpiece with open or closed bell
    • Non-chill bell sleeve for greater patient comfort
    • Soft-sealing eartips provide optimal comfort and excellent sound occlusion
    • Made in the USA without natural rubber latex

    Built to hear more
    Sturdy and refined, the Littmann Cardiology IV helps isolate subtle sounds2 so you can hear changes in your patients in the most critical and challenging environments. Designed to help you listen for hard-to-hear sounds, including aortic stenosis, S3 gallop murmurs and faint pulmonary anomalies.

    Useful in critical care and challenging environments
    Such as the ED, ICU, Cardiac ICU, step-down unit and other dynamic locations

    Hear subtle changes in patient status.

    Diagnose and make decisions with confidence.

    2Better audibility of high-frequency sounds (adult side, firm pressure) compared to Cardiology III can help you learn more about your patient’s condition

    Warranty & Service

    3M™ Littmann® Stethoscope Repair Services

    Find out if your Littmann stethoscope is under warranty and view available service options and pricing (in or out of warranty) using our Warranty and Service Request Tool. This tool is only offered for USA customers.

    Find your country repair options

    For US customers only.


    Customer Reviews
    3M™ Littmann® Cardiology IV™ Diagnostic Stethoscope is rated 2.8 out of 5 by 21.
    Rated 2 out of 5 by from Diaphragm has fallen apart I have used this stethoscope in the emergency department for about one year and the large diaphragm has cracked and falls off almost every time I use the stethoscope. I do not recommend this stethoscope to others.
    Date published: 2018-06-20
    Rated 5 out of 5 by from Great for my day to day Resident in IM/Peds, so the dual heads saves me from having to carry both my pediatric and adult steths on service. I particularly appreciate the crystal clear sound I get from this stethoscope and of course like the long wearability of the ear pieces (much more comfortable than most competitors'). My only complaint is that my diaphragm fell off somewhere, though customer support was quick and responsive, and has got a replacement part in the mail to me free of charge. In all, well worth every penny I spent on it. Compared to my old classic II, my new cardiology 4 offers superior acoustic quality.
    Date published: 2018-06-11
    Rated 2 out of 5 by from Cardiology stethoscope black chest piece finish I bought this stethoscope a week ago and noticed a small crack on the chest piece, I was very disappointed because I purchased the stethoscope for £180.59 as I expected a high quality product from Littmann.
    Date published: 2018-06-09
    Rated 1 out of 5 by from Hmmm poor diaphragm design Diaphragm keeps falling off , I lost 2 so far . poor design , Littmann should provide us all owners with new improved diaphragms
    Date published: 2018-06-01
    Rated 2 out of 5 by from Diaphragm fell off! I bought this stethoscope over a year ago. Was happy with the product initially, however I did note that the diaphragm was a little loose at first. Didn't think much of it at that time, until the day it fell off completely. Was not able to find it anywhere. Truly disappointed as I expected Littmann to produce quality products. I've noticed mine was not an isolated experience, as a colleague of mine had a similar problem and noted a few similar reviews online. Anyway, I've just sent my stethoscope as it is covered under warranty. A bit of an inconvenience as I have to rely on someone else's stethoscope at work, until I get mine back hopefully soon. Would appreciate if Littmanns could look into this so it doesn't occur again in future.
    Date published: 2018-06-01
    Rated 1 out of 5 by from Great brand but Cracked item!!! I’m the big royal customer of Littmann. I purchased Classic III when I was in Med school and Cardiology III when I was internships. Now, I used to use the Cardiology IV... coz It’s broken and I have to use my old one, Cardiology III. See! Why did I need to get the new Cardio IV. My trouble is the cracked and loose diaphragms. I have to keep the diaphragms on coz they are repeatedly falling off and, finally, It was missing!!! I do agree with the previous review on this site that the head swivel is also too loose, and it moves making difficulty for listening. But now I can’t use it at all!! I have to say “Disappointed” for my Littmenn Cardiology IV. The material of Cardio III is a lot stronger and higher quality. For the Cardio IV, Quality is missing! It is unusual to have this much trouble with Littmann scope. I hope you have a rapid solution, and/or a different scope to replace this one.
    Date published: 2018-05-25
    Rated 2 out of 5 by from Diaphragm loose I bought this around a year ago, it arrived with a cracked earpiece and the diaphragm has been loose since the beginning, frequently falling off. This seems to be a common problem with the cardiology IV, several of my colleagues have this problem (at least three). Would not recommend.
    Date published: 2018-05-20
    Rated 4 out of 5 by from Adult diafragm The adult diafragm started to loose the whole time. At some point I had to replace it. So I bought from an online retailer in Sweden the diafragm. But it should not be like that after only 1½ year. Today I replaced the diafragm so I'll let you know how long it will last
    Date published: 2018-05-08
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    3M, Littmann, the L Littmann logo, L, Master Cardiology, Cardiology IV, Master Classic II, Classic III, and the shape of the stethoscope chestpiece are trademarks of 3M. Bluetooth is a registered trademark of Bluetooth SIG. Java is a registered trademark of Oracle.