A true clinical workhorse, providing high acoustic sensitivity through its dual-sided, stainless steel chestpiece; with a tunable diaphragm on one side & traditional bell on the other. Used by students & medical professionals alike to identify, listen to, & study heart, lung, & other body sounds for physical assessment & diagnosis. Tunable diaphragm technology – a 3M invention – lets clinicians hear different frequency sounds by simply adjusting the pressure on the chestpiece. Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency sounds. This time-saving feature allows the healthcare provider to focus on the patient, while the non-chill rim provides patient comfort. Headset tension is easily adjusted for head size & comfort by squeezing together or pulling apart the eartubes. Snap-tight, soft-sealing eartips conform to individual ears for an excellent acoustic seal & 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 & flexibility even after folding tightly into a pocket. It provides longer stethoscope life due to improved resistance to skin oils & alcohol, & is less likely to pick up stains. Next-generation tubing is not made with natural rubber latex, a benefit to sensitive medical professionals & their patients. The next-generation tubing does not contain phthalate plasticizers. Comes complete with large soft-sealing eartips, large firm eartips, & instructions. Length: 28"; Color(s): Black.