3M Littmann Lightweight II S.E. Stethoscope, Black Tube, 28 inch, 2450 is an ideal entry level instrument, with a tunable diaphragm, dual sided chestpiece and reliable acoustic performance. Its teardrop shape makes auscultation around blood pressure cuffs easier.Uses:Used to detect sounds in the body to check any diseased conditionSalient Features:Lightest weight of all Littmann adult stethoscopes at just 118 gramsDual sided chestpiece provides versatility of both a tunable diaphragm and open bellTeardrop shaped chestpiece for easier positioning under blood pressure cuffs and around bandagesTunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpieceSoft sealing eartips provide an excellent acoustic seal and comfortable fitTunable diaphragm technology provides clinicians hear different frequency sounds by simply adjusting the pressure on the chestpieceResilient tubing retains its shape and flexibility even after folding tightly into a pocketHeadset tension is easily adjusted for head size and comfort by squeezing together or pulling apart the eartubesSnap tight, soft sealing eartips conform to individual ears for an excellent acoustic seal and comfortable fitEartips snap firmly onto the ends of the eartubes and, for safety, require a significant effort to removeNext generation tubing is not made with natural rubber latex, a benefit to sensitive medical professionals and their patientsConvenient and comfortable to useDirections For Use:Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency soundsThis time saving feature allows the healthcare provider to focus on the patient, while the non-chill diaphragm and rim provide patient comfortSafety Information:Read the label carefully before useKeep out of the reach of children