DUO ECG + Digital Stethoscope

In stock with free shipping. MPN: #DUO101

$ 349.00


$ 349.00

Eko Platform - Plan Options

Essentials Plan

Record, Save, and Share High Quality Recordings

Pro Plan, 1st Month Free

30-day trial of AI analysis algorithms for heart murmurs & AFib

Pro Telehealth Plan, 1st Month Free

30-day trial of AI-powered cardiopulmonary telehealth platform


FDA Cleared

HIPAA Compliant

FSA/HSA Eligible

Free Shipping & Returns

2-Year Warranty

Money Back Guarantee

Product Overview

  • The first combined digital stethoscope + handheld ECG provides unprecedented insight into cardiac function.
  • Removable earpieces support wireless auscultation using the Eko mobile App and headphones with 60x amplification of heart, lung, and body sounds.
  • The single-lead ECG enables clinicians to monitor the heart's electrical activity and screen for arrhythmias.
  • Eko products are FDA cleared and used daily by clinicians at over 4,000 schools, clinics, and hospitals.
  • The free Essentials Plan enables clinicians to visualize, record and save sounds and ECGs for further analysis, or securely share them for a second opinion.
  • Add the Pro Plan to enable Eko AI analysis for heart murmurs and AFib or Pro Telehealth Plan for AI-powered telehealth visits.

Two in One Stethoscope + ECG

The most advanced device of its kind, DUO combines a powerful digital stethoscope and ECG in a single handheld device. A large audio driver and comfortable ear-tips deliver rich heart sounds, while Eko’s patient-friendly software makes it simple to visualize and share sounds and ECGs. DUO can be used by clinicians as their day-to-day stethoscope, or by patients at home for longer-term self-monitoring when prescribed by a physician.

Pair with Eko Software

Unlock the full potential of DUO by pairing with the Eko Platform.

  • Visualize heart sound waveform (phonocardiogram) & ECG (electrocardiogram) tracings 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 and AFib with Eko AI analysis algorithms.
  • Add the Pro Telehealth Plan for AI-powered live stream auscultation and ECG with integrated videoconferencing.

Features & Specs

Product Information

  • MPN: DUO101
  • UPC: 863609000327


Digital Stethoscope

  • 60x sound amplification
  • 12 volume settings
  • Digital-only sound mode
  • 20Hz - 2Khz frequency response
  • 4000Hz sample rate
  • 4 selectable audio filters: Diaphragm 100-500Hz, Bell mode 20-200Hz, Midrange 50-500Hz, Extended 20-2000Hz


Single-Lead ECG

  • 2 stainless steel electrodes
  • 0.01Hz high pass filter
  • Selectable 50 / 60Hz mains filter
  • 500 Hz sampling rate


Connection & Storage

  • Threaded 3.5mm jack for headphones or audio cable
  • Bluetooth 4.0 low-energy
  • .WAV and .PDF file formats


Dimensions & Weight

  • 4.7 inches (119mm) L x 1.9 inches (47mm) W x 0.6 inches (16mm) H
  • Length with EARPIECE: 31.5 inches (711.2mm)
  • 7.3 ounces (208 grams)



  • Wireless induction charging
  • Automatic power off after 5 minutes of inactivity
  • Rechargeable lithium-ion battery with 9-hour life



  • 6061 machined aluminum and
  • High-impact ABS thermoplastic
  • Does not contain natural rubber latex or phthalate plasticizers
  • Clean with isopropyl alcohol wipes


Certifications & Licenses 

  • FDA Cleared
  • CE Cleared
  • ISO 13485 Certified
  • MDSAP Certified
  • HIPAA Compliant



Commonly Asked Questions


What is the Eko DUO ECG + Digital Stethoscope?


The DUO is a combined digital stethoscope and single-lead ECG. It’s earpieces screw on and off so it can be used like a traditional stethoscope or without earpieces for telemedicine workflows or ECG screening. You can use DUO only as a digital stethoscope, only as an ECG, or both at the same time.



Is the DUO analog or digital?


The DUO is only a digital stethoscope and cannot be used in analog mode like the CORE. DUO has amplifies sounds up 60x, with 12 volume settings, and Bluetooth functionality so it can wirelessly connect with the Eko App.



What are the electrodes made of?


The ECG electrodes are made of stainless steel. They are designed to work without any gel or cream, however gels or creams can improve the signal quality in some situations.



How does the DUO work for Bluetooth or Wireless Auscultation?


The DUO provides wireless functionality utilizing Bluetooth technology. DUO supports wireless auscultation using the Eko App and headphones, Bluetooth-enabled hearing aids, or other devices. 


Alternatively, DUO is fitted with a 3.5mm audio jack, so you can directly connect headphones or other streaming devices.



Can I use DUO in pediatrics?


The indication for use of DUO is for patients over 10kg.



Can I use DUO with a pacemaker or ICD?


DUO has not been tested for accuracy with ECG recordings taken from users with pacemakers. We cannot recommend DUO for users with pacemakers or ICDs because we cannot guarantee the accuracy of the resulting ECG readings.



Are Eko products FDA cleared?


The Eko CORE, Eko DUO and Analysis Software are FDA cleared and CE marked.


Is DUO compatible with the Eko App & Platform?


Yes the 3M™ Littmann® CORE Digital Stethoscope connects to Eko software. The free features of the App enable clinicians to:

  • Visualize heart sound waveforms (phonocardiogram) in real-time
  • Capture, save, and share 15, 30, 60, or 120-second recordings
  • Auscultate wirelessly utilizing Bluetooth technology
  • Connect to the Eko Dashboard to view patient records and download reports


What is Eko AI analysis and the Pro Plan?


The Pro plan enables AI analysis of heart sounds and ECG to your device, and helps identify AFib, heart murmurs, and early signs of structural heart disease. We recommend the Pro Plan for individuals and small clinics that want to digitize their practice and identify early signs of heart disease.



What is Eko Telemedicine and the Pro Telehealth Plan?


The Pro Telehealth plan combines high-fidelity stethoscope auscultation sounds and ECG, videoconferencing, and AI analysis into a single platform. Pro Telehealth is built for small clinics and multi-site hospitals to quickly deploy without the overhead of large scale telemedicine platforms.



How do Eko Pro and Pro Telehealth plans work and is there a free trial?


Both the Pro and Pro Telehealth plans are available for subscription on our website. You can checkout with just a subscription or purchase a stethoscope & subscription bundle. All stethoscopes come with the free Essentials plan.


All paid plans come with a risk free 30-day trial. To claim your trial, checkout with your desired plan and then our support team will activate your account within five business days. There are both monthly and yearly plans that can be canceled at any time.



What is the warranty and return policy for the DUO?


The DUO comes with a 2-year warranty which is warranted against any defects in material and workmanship and Eko will honor a 30-day return policy for a full-refund.




Eko App Compatibility




Apple iOS

Apple devices with iOS 11 or later.



Most PCs with Windows 10 and above.


Windows does not support wireless listening.



Samsung Galaxy, Google Pixel, and other Android devices 8.0 and up*.


*Compatible Android devices:

Samsung Galaxy Note 10+

Samsung Galaxy Note 9

Samsung Galaxy Note 8

Samsung Galaxy S10

Samsung Galaxy S10+

Samsung Galaxy S9

Samsung Galaxy S9+

Samsung Galaxy S8 

Samsung Galaxy S8+

Samsung Galaxy S7 Edge

Google Pixel 3

Google Pixel 3a

Google Pixel 3 XL

Google Pixel 4

Google Pixel 4 XL

Google Pixel 2

Google Pixel 2 XL

Motorola Moto X4

LG Nexus 5X


Learn more about system requirements & compatibility



Resources & User Manuals

Published Research


Read published clinical research featuring Eko technology in practice.



Case Studies


Discover examples of how Eko is helping health systems address real-world challenges.



Partner Network


Work with our network of resellers, research partners, and solution integrators.





DUO Overview

How Clinicians use the DUO

Using Eko for Telemedicine

How to Auscultate Wirelessly with Eko

Demonstrating Eko AI for Murmur & AFib Screening




DUO User Manual

Eko AI Analysis Software User Manual

Visit our support portal for all technical documentation of the DUO, Eko App, and Dashboard.



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.



1-Year Warranty


Eko expressly warrants that the Eko Products will materially conform to its published specifications and be reasonably free from defects in materials and workmanship for a period of TWO (2) YEARS for the Eko CORE Digital Attachment, Eko CORE Digital Stethoscope and ONE (1) YEAR for the Eko DUO, commencing on the date of delivery of the Eko Product to you (the “Warranty Period”). This Limited Warranty only applies to products which are purchased from Eko and other authorized retailers, resellers, and distributors and used, stored, and handled in the manner recommended by Eko. We may change the availability of this limited warranty at our discretion, but any changes will not be retroactive.



Stethoscope Reviews