3M™ Littmann® Stethoscope Spare Parts Kit for the Lightweight II S.E. Stethoscope contains a black rim and tunable diaphragm in addition to two small (1/2 inch), black Snap Tight Soft-Sealing Eartips.
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.
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.
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The repair was simple and the customer service was excellent. I apparently misordered the part. Service department quickly helped and sent the correct parts.
I got the wrong parts ,I spoke to someone about it and told me to send it back for a refund .I wanted the round shape and they send the tear drop shape. but I have decided to keep it for features use.
perfect fit...great service....no issues Will use service again.