The 3M™ Littmann® Master Cardiology™ Stethoscope is characterized by the best acoustic response in the Littmann mechanical stethoscope line; with a tunable diaphragm, dual-lumen tubing, and a precision, ergonomically designed, stainless steel chestpiece. Its tunable diaphragm technology lets clinicians hear different frequency sounds by simply adjusting the pressure on the chestpiece. Unlike two-sided models, there’s no need to turn over and reposition the chestpiece. Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency sounds.

• Outstanding acoustics
• Dual-lumen tubing – two sound paths in one tube eliminates the rubbing noise of traditional double tubes
• Headset tension is easily adjusted for head size and comfort by squeezing together or pulling apart the eartubes
• Snap-tight, soft sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fit
• Eartips snap firmly onto the ends of the eartubes and, for safety, require a significant effort to remove
• Resilient next-generation tubing retains its shape and flexibility even after folding tightly into a pocket and provides longer stethoscope life due to improved resistance to skin oils and alcohol
• Next-generation tubing is not made with natural rubber latex and does not contain phthalate plasticizers
• Comes complete with large and small soft-sealing eartips, large firm eartips, Special Procedures Adapter and instructions