This is a chinese made copy of a low tech. medical instrument. As a copy it is 20% of what I paid 30years ago for a similar stethoscope. I am not a cardiologist but,to me, as an otolaryngologist it appears to satisfactorily transmit and amplify pulmonary, cardiac, and bowel sounds for general evaluation of these organs. The tubing has taken on a mild twist from prolonged storage, the instrument doesn't hang straight from the user's neck but this is cosmetic and perhaps not all would display this mild problem. The tubing is soft and the workmanship is the equal of a similar stethoscope I purchased in the 1970's.
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