Littmann Electronic Stethoscope Model 3100

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  • Cardiology-grade, high performance amplified electronic stethoscope.
  • Up to 24X sound amplification provides extra listening power.
  • Ambient Noise Reduction Technology cancels out 85% of ambient background noise for exceptional sound quality.
  • Acoustic seal eartips and tubing provide a comfortable fit.
  • Frictional Noise Reduction Technology helps reduce handling noise.
  • Rugged design has been performance tested for drops and impact against bed rails and door frames.
  • LCD interface with backlight.

Clinical evidence shows the 3M™ Littmann® Electronic Stethoscope Model 3100 makes it easier to detect difficult-to-hear heart sounds as well as abnormal lung sounds.

Proprietary Ambient Noise Reduction Technology cancels out 85% of ambient background noise without eliminating critical body sounds

Acoustic Seal Eartips and Tubing provide a comfortable fit and excellent acoustic seal from ambient noise entering through tubing and eartip connections

State-of-the-Art Sound Sensor provides a life-like 3M™ Littmann® sound experience similar to a high-end cardiology stethoscope

Frictional Noise Reduction Technology help reduce handling noises compared to earlier electronic stethoscopes

Up to 24X Sound Amplification provides extra listening power; may be helpful when heart, lung or body sounds are especially faint; when a patient is obese; or when a patient's clothing restricts your listening experience


  • Easy-to-Operate Controls
  • Dedicated controls for power on/off, bell/diaphragm frequency, and (+) and (-) buttons to adjust sound level
  • All controls and display are easily viewable while you listen
  • Menu button produces screen-guided commands to customize start-up setting options
  • Ambient Noise Reduction (ANR) is activated when electronic stethoscope is on
  • Occupation: Anesthesiologist, Cardiologist, Emergency Physician, EMT/EMS, Family Practitioner, Internist, Medical Student, Nurse, Pediatrician, Physician, Respiratory Specialist
  • Length: 27 inches

Convenient LCD Display

  • Advises you of current sound level
  • Shows if you are in bell or diaphragm mode
  • Indicates remaining battery life
  • Displays patient heart rate after 5 seconds; updates every 2 seconds
  • Backlight
  • Indicates sleep mode

Instant-On Feature

  • No waiting to start your next auscultation
  • Battery-saving sleep mode

LCD Backlight

  • Customizable backlight options
  • Option to always run backlight at a reduced level to conserve battery life
  • Easily activates

Auscultates Patients of Different Sizes

  • Flat diaphragm for stability
  • Sound pick-up happens at the center, so it's sized right for infants and adults

Worry-Free Power

  • Low battery multiple reminders, including an LCD display icon
  • Tool-free access to battery compartment
  • Operates on single AA battery (included)
  • Compatible with lithium batteries for cold temperature auscultation
  • Compatible with rechargeable batteries and NiMH batteries


  • Weight similar to cardiology-grade acoustic stethoscope
  • Traditional tubing design folds easily into a pocket and drapes comfortably over the neck
  • 3M™ Littmann® Snap Tight Soft-Sealing Eartips patented soft-sealing eartips are included in two sizes for a custom fit
  • Non-chill diaphragm
  • Chestpiece designed for many different grip styles


  • Rugged design
  • Durable metal chestpiece
  • Performance tested to withstand accidental drops to the floor and impacts against bed rails and door frames