Professional Sprague Rappaport Type Stethoscope

Professional Sprague Rappaport Type Stethoscope
Specification:
1.Zinc alloy chest piece, 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 chest piece 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