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

    • Outstanding acoustics with better audibility of high-frequency sounds (adult side, firm pressure).
    • Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece.
    • Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes.
    • Next-generation tubing lasts longer and resists stains. Not made with natural rubber latex or phthalate plasticizers.
     More...

    Hear more with the Cardiology IV Stethoscope.

    Close up view of the Cardiology IV Stethoscope on a black background.
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    Hear a new level of quiet.


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

    • Littmann Cardiology IV Stethoscope better audibility.

      Better audibility of high-frequency sounds* 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.

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

    Details
    • Outstanding acoustics with better audibility of high-frequency sounds (adult side, firm pressure).
    • Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece.
    • Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes.
    • Next-generation tubing lasts longer and resists stains. Not made with natural rubber latex or phthalate plasticizers.
    • Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals.
    • Seven-year warranty provides greater peace of mind

    The 3M™ Littmann® Cardiology IV™ Stethoscope is designed for clinicians who require outstanding acoustic performance combined with exceptional versatility. Its innovative design provides a single-piece tunable diaphragm on each side of the chestpiece.

    The 3M™ Littmann® Cardiology IV™ Stethoscope is the next generation of one of the most recognized stethoscopes in the profession, offering improved acoustic performance with better audibility of high-frequency sounds (adult side, firm pressure). Its distinctive chalice-shaped chestpiece features tunable diaphragms on both sides to deliver outstanding acoustic performance, diagnostic versatility, and convenience for treating adult and pediatric patients. The pediatric side of the chestpiece converts to a traditional open bell by removing the tunable diaphragm and replacing it with the included non-chill bell sleeve.

    Both the adult and pediatric sides of the chestpiece have single-piece diaphragms that are easy to remove, attach and clean because the surfaces are smooth and without crevices.

    Tunable diaphragm technology—a 3M invention—lets clinicians hear different frequency sounds by simply adjusting the pressure on the chestpiece. Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency sounds. This time-saving feature allows the clinician to focus on the patient, while the non-chill rim provides patient comfort.

    Headset tension is easily adjusted for head size and comfort by squeezing together or pulling apart the eartubes. Snap-tight, soft-sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fit. Eartips snap firmly onto the ends of the eartubes and, for safety, require a significant effort to remove.

    Dual-lumen tubing combines two sounds paths in one tube, eliminating the rubbing noise that traditional double tubes create. This feature makes it possible for the clinician to hear patient sounds with less interference.

    Resilient next-generation tubing retains its shape and flexibility even after folding tightly into a pocket. It provides longer stethoscope life due to improved resistance to skin oils and alcohol, and is less likely to pick up stains. Next-generation tubing is not made with natural rubber latex, a benefit to sensitive clinicians and their patients. And, to play its part in the protection of human health and the environment, the next-generation tubing is not made with phthalate plasticizers.

    The Cardiology IV stethoscope isn’t just for cardiologists. It is used by specialists and general practice physicians, critical care nurses, EMTs, medical students, and other healthcare professionals to identify, listen to, and study cardiac, lung, and other body sounds in adult and pediatric patients. The Cardiology IV stethoscope is made in the USA and is supported by a seven-year warranty. It comes complete with large and small soft-sealing eartips, large firm eartips, non-chill bell sleeve, and instructions.

    3M™ Littmann® Stethoscopes are used by millions of medical professionals around the world who are dedicated to achieving the best patient outcomes. Littmann stethoscopes offer superb acoustic performance, consistently high quality, and outstanding value. Wearing a Littmann stethoscope is an expression of your commitment to medicine, and personal success.

    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


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    Customer Reviews
    3M™ Littmann® Cardiology IV™ Stethoscope is rated 2.9 out of 5 by 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
    Rated 2 out of 5 by from When it works, it works Diaphragm keeps falling off, have to dig through pockets, patient's bed to find. diaphragm ended up cracking. Can't find replacement parts...
    Date published: 2018-05-05
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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.