The Littmann Master Classic II stethoscope provides "excellent acoustics". Patented tunable diaphragm conveniently alternates between high & low frequency sounds without the need to turn over the chestpiece.

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This portable high performance stethoscope offers efficiency in auscultation that is unprecedented in a general examination stethoscope. Its unique "Master" chestpiece lets you monitor low and high-frequency sounds by simply alternating pressure. The 3M Littmann Master Classic II Stethoscope's chestpiece assures long-lasting performance and durability. It is protected with a hand-polished, scratch-resistant finish. A reinforced double-leaf spring and thick binaural provide extra durability, while still maintaining portability. The 3M Littmann Master Classic II stethoscope provides excellent acoustics in a portable design.

** The patented tunable diaphragm alternates between low and high frequencies without turning over the chestpiece. This allows for same-site auscultation.
** The chestpiece is finger-contoured for an easy-grip, secure hold.
** The lightweight, adjustable-tension headset, and patented 3M Littmann Snap-tight Soft-sealing Eartips make the stethoscope even more comfortable to wear.
** The thick single-lumen tubing provides excellent portability, allowing you to fold the stethoscope easily into your pocket without kinking or breaking.
** The new Master chestpiece makes it easier to auscultate under a patients gown.
** It features a nonchill rim and diaphragm assembly for patient comfort.  The chestpiece is finger-contoured for an easy-grip, secure hold.
** The lightweight, adjustable-tension headset, and patented 3M Littmann Snap-tight Soft-sealing Eartips make the stethoscope even more comfortable to wear.
** The thick single-lumen tubing provides excellent portability, allowing you to fold the stethoscope easily into your pocket without kinking or breaking.
** The new Master chestpiece makes it easier to auscultate under a patients gown.
** It features a nonchill rim and diaphragm assembly for patient comfort.  The chestpiece is finger-contoured for an easy-grip, secure hold.
** The lightweight, adjustable-tension headset, and patented 3M Littmann Snap-tight Soft-sealing Eartips make the stethoscope even more comfortable to wear.
** The thick single-lumen tubing provides excellent portability, allowing you to fold the stethoscope easily into your pocket without kinking or breaking.
** The new Master chestpiece makes it easier to auscultate under a patients gown.
** It features a nonchill rim and diaphragm assembly for patient comfort.  The chestpiece is finger-contoured for an easy-grip, secure hold.
** The lightweight, adjustable-tension headset, and patented 3M Littmann Snap-tight Soft-sealing Eartips make the stethoscope even more comfortable to wear.
** The thick single-lumen tubing provides excellent portability, allowing you to fold the stethoscope easily into your pocket without kinking or breaking.
** The new Master chestpiece makes it easier to auscultate under a patients gown.
** It features a nonchill rim and diaphragm assembly for patient comfort. chill rim and diaphragm assembly for patient comfort.