SW-ST03A Standard Type Sprague Rappaport Stethoscope

1.zinc alloy chestpiece, excellent sound conduction , little acoustic attenuatioin.
2.standard dual PVC tubing ,well-sealed dual sound conduction channel,
good resistance to ambient interference  color is optional .
3.High quality rolled steel connecting spring, tightness is reasonable
4.three plastic black bells of chestpiece are applicable for auscultation of from adult to neonatal,
embryocardia or cacophony of vas
5.two pair of ear tips with different hardness , two different size spare diaphragms .
6. the attached transparent multi-pocket bag includes.