A Littmann stethoscope is recognized worldwide for its outstanding quality, exceptional acoustics, and unparalleled comfort. Developed by 3M, Littmann stethoscopes are the first choice for doctors, nurses, and medical students who rely on precise diagnostics. Whether Classic III, Cardiology IV, CORE, or Master Cardiology – Littmann offers the right stethoscope for every requirement.

What is Dual-Frequency Technology?
It is an advanced sound modulation method that captures different frequencies by varying the pressure applied to the chest piece. Light pressure enhances low-frequency sounds, while firmer pressure on the membrane makes high-frequency sounds audible. This allows seamless and efficient switching between different frequency ranges.

How does Dual-Frequency Technology work?
The special Littmann stethoscope membrane responds to applied pressure and changes its resonance frequency accordingly. This enables more precise diagnostics, allowing the user to quickly switch between low and high tones without having to turn or change the chest piece. This technology is particularly useful in distinguishing fine heart and lung sounds.

The patented Dual-Frequency Technology from 3M Littmann allows users to switch between high and low frequencies without rotating or repositioning the chest piece. This greatly simplifies auscultation and improves diagnostic accuracy.

Outstanding Acoustic Performance - What sets Littmann apart from other manufacturers?
Littmann stethoscopes are equipped with special high-performance membranes that capture the finest acoustic details. The advanced dual-lumen tubing minimizes unwanted friction noises and provides unparalleled sound quality. Additionally, the precise processing of materials ensures exceptionally high sound transmission.

How does a Littmann stethoscope work?
When the chest piece is placed on the skin, the membrane picks up sound waves, which are transmitted through the tubing to the ear tips. The innovative Dual-Frequency Technology allows users to switch between low and high frequencies simply by adjusting pressure—without needing to flip the chest piece. In the CORE Digital Stethoscope, the audio signal is additionally amplified electronically and can be analyzed and stored via a smart interface.

Thanks to innovative membrane and tubing technology, Littmann stethoscopes provide excellent sound transmission, even in noisy environments. Especially the Cardiology IV, Master Cardiology, and CORE Digital Stethoscope set new standards in acoustic performance.

Ergonomic Design and Comfort
Soft ear tips and individually adjustable ear tubes ensure an optimal fit and comfort. The lightweight design of many models, such as the Lightweight, significantly eases daily work.

1. Classic III – Versatile and Reliable
The Classic III Stethoscope is ideal for medical students, general practitioners, and nursing staff. It is excellent for general examinations and patient monitoring.

• Dual-Frequency Membrane for adults and children
• High-quality acoustics for clear listening experiences
• Durable & easy to clean
• Warranty: 5 years

2. Cardiology IV – For Precise Diagnoses
The Cardiology IV Stethoscope is specifically designed for cardiologists and internists. It provides enhanced acoustic sensitivity and helps diagnose complex heart and lung sounds.

• Excellent acoustics (performance level 9-10)
• Double-sided chest piece with convertible open bell
• Integrated Dual-Frequency Technology for seamless frequency switching
• Perfect for demanding diagnoses
• Warranty: 7 years

3. Master Cardiology – The Stethoscope for Specialists
The Master Cardiology Stethoscope is the most powerful mechanical Littmann stethoscope. It offers the best acoustics of all Littmann models and is ideal for specialists in cardiology.

• Single-sided chest piece with special Dual-Frequency Technology
• Dual-lumen tubing for outstanding sound
• transmission Superior diagnostic capabilities
• Warranty: 7 years

4. CORE Digital Stethoscope – The Future of Auscultation 
The CORE Digital Stethoscope combines Littmann's proven technology with digital amplification and connectivity.

• Up to 40x amplification of heart and lung sounds
• Noise reductionfor clear listening experiences
• Digital connectivity to Eko software for recording and analysis
• Warranty: 2 years

5. Lightweight – Ideal for Nursing
The Lightweight II S.E. Stethoscope is perfect for nurses and blood pressure measurement applications.

• Teardrop-shaped chest piece fits perfectly under blood pressure cuffs
• Very lightweight and comfortable to wear
• Best price-performance ratio
• Warranty: 2 years

6. Classic II – For Children and Infants
The Classic II Stethoscope is specifically designed for examining children and infants. It provides excellent acoustics and is perfectly tailored to the needs of pediatric auscultation.

• Double-sided chest piece for precise examinations
• Smaller diaphragm for better adaptation to small patients
• Outstanding sound quality for pediatric diagnostics
• Warranty: 3 years

To effectively assess and monitor your patients, it is crucial to learn how to use a stethoscope correctly - and this takes more than just lots of practice.  

Choose a stethoscope with professional-level acoustics right from the start that you will enjoy for years to come. 3M™ Littmann® stethoscopes are the first choice for students and medical professionals and are recommended by instructors for use in the classroom and in the field.

The Littmann stethoscope models recommended for students looking for a high-quality, reliable stethoscope for learning purposes are the 3M™ Littmann® Classic III™ and the 3M™ Littmann® Cardiology IV™ stethoscope . They offer high acoustic sensitivity, increased comfort and advanced features. They feature the versatility of a two-sided chest piece - one side is the right size for adults and the other for children. A wide range of tube colors and chestpiece styles ensures that you will find a stethoscope that suits you. Do you need help making the right choice? We are happy to help you.

Littmann has developed a powerful app to train users to recognize benign and pathological heart sounds and lung sounds through learning modules. Click here to access the 3M Littmann Learning App