Product Description
Littmann Cardiology IV Stethoscope Model 6165
Precision acoustics. Sleek design. Trusted performance.
The Littmann Cardiology IV Rainbow Edition 6165 brings serious performance with a bold, eye-catching twist. The striking rainbow-finish chestpiece paired with all-black binaurals and black tubing creates a sleek, modern look that stands out without feeling over the top. It’s powerful, stylish, and perfect for anyone who wants the trusted acoustics of the Cardiology IV with a design that feels confident, unique, and impossible to ignore.
Whether you're a physician, nurse, EMT, or medical student, the Cardiology IV delivers the performance and versatility needed to confidently assess both adult and pediatric patients.
Why Choose the Littmann Cardiology IV?
- Superior Acoustic Performance – Hear subtle heart, lung, and body sounds with clarity
- Dual-Sided Chestpiece – Easily switch between adult and pediatric patients
- Tunable Diaphragm Technology – Detect high and low frequencies without repositioning
- All-Black Professional Design – Sleek, modern, and durable
- Comfortable 27” Length – Fits securely around your neck for all-day use
- Weighs less** than other stethoscopes
- Same-Day Engraving Available – Personalize for identification or gifting
Built for Clinical Excellence
Engineered for demanding environments like hospitals, ERs, and clinics, the Littmann Cardiology IV features dual-lumen tubing that eliminates noise interference and delivers clear sound directly to each ear.
It’s more than twice as loud* as comparable stethoscopes and excels at detecting low-frequency (below 120Hz*) sounds such as:
- Korotkoff sounds
- Mitral stenosis murmurs
- S3 and S4 gallops
Product Features & Specifications
Model: 6165
Color: Rainbow finish chestpiece, all black binaurals, black tubing
Length: 27 inches
Weight: 6.2 oz
Chestpiece:
- Adult diaphragm: 1.7”
- Pediatric diaphragm: 1.3”
- Convertible pediatric side to open bell (included sleeve)
Technology & Build:
- Dual-lumen tubing for reduced noise interference
- Tunable diaphragms on both sides
- Soft-sealing eartips for comfort and acoustic seal
- Adjustable headset for personalized fit
- Latex-free, phthalate-free tubing resistant to oils and alcohol
Warranty: 7-year manufacturer warranty
Origin: Made in the USA
Personalize with Same-Day Engraving
Add a custom engraving that appears in dark contrast on the stainless steel chestpiece.
Perfect for:
- Preventing loss or theft
- Medical school graduation gifts
- Professional identification
Who This Stethoscope Is For
- Physicians and specialists
- Nurses and nurse practitioners
- EMTs and paramedics
- Medical and nursing students
Trusted by Medical Professionals Worldwide
The Littmann Cardiology IV is one of the most widely recommended stethoscopes for its balance of performance, durability, and comfort. It’s built to handle the demands of daily clinical use while delivering consistent, reliable results.
Ready to Upgrade Your Diagnostic Tools?
Get the Littmann Cardiology IV Model 6165 today and experience unmatched acoustic performance.
- Order now for fast shipping
- Add engraving for same-day personalization
Disclaimer
*Based on tests against comparable stethoscopes in the same class using recorded heart sounds.
**Based on published weights of comparable stethoscopes in the same category.
Product Videos
Custom Field
Product Reviews
36 Reviews Hide Reviews Show Reviews
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Stethoscope
Arrived quickly. No complaints. Smooth transaction!
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rainbow edition with engraving
I was ordering this for my step daughter whose in nursing school. She sent me a link and I was having trouble ordering on my phone. I called customer service to be sure I hadn't mistakenly ordered more than one. I left a message and was a little disappointed someone hasn't answered; however, a representative called me back within 15 minutes, reviewed my transaction with me to check for errors and he assured me everything was in order and because i live in the same state, I would have it quickly. He was very kind and professional and we had it, even with the engraving, the VERY NEXT DAY, which was a Saturday! The stethoscope came with some extra ear pieces and my step daughter says it works incredibly well. She was also extremely happy to have the engraving because she was afraid someone would try to take it. It's a fantastic design and great product along with wonderful customer service!
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Very pleased customer!
I’m very pleased with the service I received. The stethoscope came super fast even with engraving done. I love my rainbow edition cardiology iv. Will definitely be ordering more from this company.
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Fast service and easy to use
The website was very easy to navigate and find what i was looking for i was looking for the rainbow cardiology 4 and opted to have it engraved. For shipping i took the standard shipping and still it shipped out the same day and i received it in 2 days. The engraving looks perfect and it made my wife happy when i surprised her with it. Definitely will use you again in the future along with recommending you to others.
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Great stethoscope.
Super nice.
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Great quality Stethoscope! Bought it for my girlfriend and she loves it! Got it engraved for her as a gift.
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Great service
Was ordering this on line and it would not complete. I called and explained. The customer service representative said let me check. They had just received a new shipment! Engraving completed and item received in just a few days. Awesome service.
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So Impressed
I ordered my cardiology stethoscope on a Friday evening (even had it engraved) and it arrived MONDAY! I am so impressed with how quickly my order came. Great and simple service.
FAQ: Littmann Cardiology IV
Is the Littmann Cardiology IV worth it?
Yes, the Littmann Cardiology IV is worth it for clinicians, students, and nurses who want stronger acoustic performance than an everyday monitoring stethoscope. It is especially useful for users who need clearer high-frequency sounds, more precise auscultation, and a stethoscope that works well across adult and pediatric patients. The Cardiology IV starts around $199.00, with premium finishes and satin tube styles priced higher.
What is the difference between the Littmann Classic III and Cardiology IV?
The Littmann Classic III is a dependable everyday stethoscope designed for routine physical assessments, making it a strong choice for nursing students, medical students, and general clinical use. It features a dual-sided chestpiece with tunable diaphragms on both the adult and pediatric sides, offering solid versatility at a more accessible price point.
The Littmann Cardiology IV is a higher-performance model built for clinicians who want enhanced acoustic sensitivity and clearer sound detail, especially when listening for subtle heart, lung, or body sounds. It also has a dual-sided chestpiece for adult and pediatric patients, but it delivers stronger sound performance than the Classic III, making it a better fit for advanced assessments, cardiology-focused care, emergency medicine, and busy clinical environments.
Is the Littmann Cardiology IV good for pediatrics?
Yes. The Littmann Cardiology IV is good for pediatrics because it has a dual-sided chestpiece with an adult side and a smaller pediatric side. The pediatric side can be helpful when assessing children or smaller auscultation areas, while the adult side supports broader general and cardiology-focused exams.
Which is better: Littmann Cardiology IV vs. Master Cardiology?
The Littmann Cardiology IV is better if you want a two-sided chestpiece for both adult and pediatric patients. The Littmann Master Cardiology is better if you want Littmann's highest-level non-digital acoustic performance in a single-sided chestpiece designed primarily for adult patients. For students, pediatric users, and general clinical flexibility, choose Cardiology IV. For advanced adult auscultation and premium acoustic sensitivity, choose Master Cardiology.
Can you remove the bell on a Cardiology IV?
Yes. The Littmann Cardiology IV has a dual-sided chestpiece with an adult side and a pediatric side. The pediatric diaphragm can be removed and replaced with the included non-chill bell sleeve, converting that side into an open bell. This lets you use the smaller side for low-frequency sounds or smaller assessment areas.
For replacement diaphragms, eartips, and more, see Littmann spare parts.
When did the Littmann Cardiology IV come out?
The Littmann Cardiology IV was introduced in March 2016. 3M announced the new model on March 22, 2016, positioning it as the next-generation cardiology stethoscope with improved ability to detect hard-to-hear body sounds. To this day, it remains one of the most reliable and trusted stethoscopes by medical professionals.
How does the Cardiology IV stethoscope sound?
The Littmann Cardiology IV is designed for clear, high-performance acoustic sound with strong audibility of subtle heart, lung, and body sounds. Compared with more basic monitoring stethoscopes, it delivers richer sound detail, especially for high-frequency sounds, and is built for demanding environments such as hospitals, ERs, clinics, and specialty care settings. The Cardiology IV offers improved acoustic performance with better audibility of high-frequency sounds.
Its tunable diaphragm technology lets clinicians hear different frequencies by adjusting pressure on the chestpiece, while dual-lumen tubing helps reduce rubbing noise and sound interference. For clinicians who want a traditional acoustic stethoscope with stronger diagnostic clarity than an everyday model, the Cardiology IV is one of the most popular upgrades.