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This stethoscope includes the thicker dual lumen tubing and not the thinner one tube to both binaurals. The dual lumen tubing in one design means there is a separate tube coming off each binuaral. This allows for greater acoustic response from the stethoscope head Our model combines a traditional bell and diaphragm into a convenient one-sided chest piece. Light pressure for low bell-type frequency, firm pressure for diaphragm type high frequency. The chest piece is precisely machined from surgical stainless steel for outstanding performance and rugged durability. Non-chill diaphragm retaining rim for patient comfort. Compare to other bi-luman cardiology stethoscopes and I do not think you will find a better value anywhere. Overall length 27" Weight 7.5oz . This model now includes ear tips that push on over the threads of the binaural instead of screwing into place. This reduces the chances of losing your ear tips by having them unscrew from the binaural. LIFETIME WARRANTY on stethoscope head, tubing, and binaruls. We include 2 extra sets of ear tips and one diaphragm with each stethoscope. These normally wear out over the years and are not part of the lifetime warranty and can be purchased for a nominal cost if you need replacements beyond the included spare parts. We will always stand behind our products no matter how long you have owned them.
