The 3M™ Littmann® Cardiology IV™ Stethoscope is designed for clinicians who require outstanding acoustic performance combined with exceptional versatility. Its innovative design provides a single-piece tunable diaphragm on each side of the chestpiece.

  • Outstanding acoustics with better audibility of high-frequency sounds (adult side, firm pressure).
  • Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece.
  • Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes.
  • Next-generation tubing lasts longer and resists stains. Not made with natural rubber latex or phthalate plasticizers.
  • Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals.
  • Seven-year warranty provides greater peace of mind.


  • Chestpiece Weight: 87g
  • Diaphragm Diameter: 4.3cm
  • Diaphragm Material: Epoxy/ Fiberglass
  • Diaphragm Type: Tunable, Single-piece
  • Eartip Type: Soft Sealing
  • Extra Eartips: YES
  • Headset Material: Wide diameter aerospace alloy/ Anodized Aluminum
  • Length (Metric): 69cm
  • Net Weight (Metric): 177g
  • Occupation: Anesthesiologist,‎ Cardiologist,‎ Emergency Physician,‎ EMT/EMS,‎ Family Practitioner,‎ Internist,‎ Medical Student,‎ Nurse,‎ Paediatrician,‎ Physician,‎ Respiratory Specialist
  • Small Diaphragm Diameter: 3.3cm
  • Warranty: 7 YEARS