Learn more about the 3M™ Littmann CORE® Digital Stethoscope.

Get quick access to features & specs, user manuals, and answers to commonly asked questions.

Product Description

Take Listening to a Whole New Level

The FDA-cleared 3M Littmann CORE Stethoscope toggles between analog and amplified listening modes so you can listen how you want to during assessments. Tunable diaphragm technology—a 3M invention—lets you hear different frequency sounds by simply adjusting the pressure on the chestpiece. Hold the chestpiece with light pressure on the patient to hear low frequency sounds; press a little more to hear higher frequency sounds. Soft-sealing ear tips conform to individual ears for optimal comfort and excellent sound occlusion.

The 3M Littmann CORE Stethoscope works with Eko software on iOS and Android devices, giving you a HIPAA compliant means to save and annotate 15, 30, 60 or 120-second recordings in a secure dashboard. Create a library of heart sounds to monitor the progressions of a disease or for education, and securely share recordings with colleagues.

The 3M Littmann CORE Digital Stethoscope is pre-assembled with a CORE Digital Attachment and a 3M Littmann Cardiology IV Stethoscope.

*40X amplification based on comparison of analog versus electronically assisted amplified listening with maximum volume at the peak frequency (125 Hz). Smart device not included.

3M™ Littmann® CORE Digital Stethoscope Overview

  • Cardiology-grade stethoscope that toggles between analog and amplified listening modes.
  • Up to 40x amplification (at peak frequency, vs. analog mode).
  • Active noise cancellation reduces unwanted background sounds.
  • Soft-sealing ear tips provide an excellent acoustic seal and comfortable fit.
  • Tunable, dual-sided stainless steel chestpiece with open or closed bell designed for use with adult and pediatric patients.
  • Provides wireless functionality utilizing Bluetooth technology.
  • Connects to Eko App to visualize and capture sounds for further analysis, or securely share them for a second opinion.

Eko Software Overview

Extend the capabilities of your stethoscope by pairing with the Eko Platform.

  • Supports wireless auscultation using the Eko App and headphones, hearing aids, or other BTE speakers.
  • Visualize heart sound waveforms (phonocardiogram) in real-time.
  • Capture 15, 30, 60, or 120-second recordings to chronicle a patient’s exam history.
  • Share recordings for a second opinion or referral as easily as sending an email.
  • A single dashboard connects you to multidimensional patient care, exam records, reports and colleagues.
  • Add the Pro Plan to help detect early-stage heart murmurs with Eko AI analysis.
  • Add the Pro Telehealth Plan for AI-powered live stream auscultation with integrated videoconferencing.
Features & Specs

Product Information

  • MPN: COR201-3M
  • UPC: 707387792428

Product Features

  • Up to 40x amplification
  • Seven sound amplification levels
  • Analog and amplified listening modes
  • Active noise cancellation
  • Snap tight, soft-sealing eartips
  • Adult and pediatric diaphragms

App Features

  • Visualize waveforms (PCG) in real-time
  • Record, save, share recordings
  • Data syncs with connected dashboard
  • Downloadable .WAV and .PDF files
  • Provides wireless functionality utilizing Bluetooth 4.2 low-energy
  • Supports wireless auscultation using the Eko App and headphones, hearing aids, or other BTE speakers
  • Pro Plan: AI analysis for heart murmurs
  • Pro Telehealth Plan: AI-powered telehealth platform

Connection & Storage

  • Bluetooth 4.2 low-energy
  • .WAV and .PDF file formats

Dimensions & Weight

  • 27 inches (69 cm) L
  • 8.1 ounces (232 grams)
  • Chestpiece size: 1.3 inches (3.3 cm), 1.7 inches (4.3 cm)
  • Chestpiece weight: 3.1 ounces (87 grams)
  • Diaphragm diameter: 1.7 inches (4.3cm), 1.3 inches (3.3 cm)


  • Easy on/off toggle
  • Micro-USB charging
  • Rechargeable lithium-ion battery with 8-hour life

Construction & Materials

  • Binaural construction: Double Lumen
  • Chestpiece technology: Double sided
  • Diaphragm material: Epoxy/Fiberglass
  • Diaphragm shape: Round
  • Diaphragm type: Tunable, single-piece
  • Eartip type: Soft sealing, extra eartips
  • Headset material: Wide diameter aerospace alloy / Anodized aluminum
  • Color: Black headset and chestpiece finish
  • Does not contain natural rubber latex or phthalate plasticizers
  • Clean with isopropyl alcohol wipes

Certifications & Licenses

  • FDA Cleared
  • HIPAA Compliant
Frequently Asked Questions
What is the 3M™ Littmann® CORE Digital Stethoscope?
What’s the difference between the 3M™ Littmann® CORE Digital Stethoscope and the Eko CORE Digital Attachment?
Does this stethoscope work for Bluetooth or wireless auscultation?
Who is this stethoscope designed for?
Does Eko help with hearing loss?
Does this stethoscope work in pediatrics?
Are Eko and 3M Littmann® stethoscopes FDA cleared?
Is the 3M™ Littmann® CORE Digital Stethoscope compatible with the Eko App & Platform?
What is Eko AI analysis?
Can Eko be used for telemedicine, virtual, or home care?
How do the free trials of Eko AI and Telehealth work?
What is the warranty and return policy for the 3M™ Littmann® CORE Digital Stethoscope?
Resources & User Manuals

Returns Policy

30-Day Money Back Guarantee: If you are unsatisfied with the Product(s) you purchased, you may return the Product within 30 days of receiving it with free return shipping. Read full policy →

2-Year Warranty

The Littmann® CORE Digital Stethoscope is backed by a 2-year warranty period. The day you bought your Littmann stethoscope establishes its warranty start date. This date can be verified on your original purchase receipt. If you do not have your receipt, Littmann will use the date it was manufactured as the warranty start date.

If a material or manufacturing defect occurs during the warranty period, Littmann will repair your Littmann stethoscope free of charge, upon return of the instrument to 3M, except in cases of obvious abuse or accidental damage. To file a warranty request for the Littmann® CORE Digital Stethoscope, visit the 3M™ Littmann® Stethoscope Repair Services site here.  

Has the warranty expired? No worries. Littmann offers affordable Littmann stethoscope repairs that include replacing the tubing, ear tubes, diaphragm, rim, non-chill sleeves and eartips. Click here to find out where to buy replacement parts. Read full policy →


Stethoscope Compatibility

  • The 3M Littmann CORE Digital Stethoscope is a fully assembled stethoscope.
  • When paired with the Eko App it provides wireless functionality utilizing Bluetooth 4.2 low-energy to headphones, hearing aids, and other BTE speakers.

Eko App Compatibility

  • Apple iOS - Apple devices with iOS 11 or later.
  • Android - Samsung Galaxy, Google Pixel, and other Android devices 8.0.
  • Windows - Most PCs with Windows 10 and above. Windows does not support wireless functionality.
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