Specification Silver dual-membrane chestpiece: the big membrane with diameter 45.5mm is sensitive for sound collecting, while the small membrane is applicable for child. Zinc alloy chestpiece, excellent sound conduction, little acoustic attenuation. Standard dual PVC tube, well-sealed dual sound conduction channel, good resistance to ambient interference, color is optional. High quality rolled steel connecting spring, tightness is reasonable. Three plastic black bells of chestpiece are applicable for auscultating from adult to neonatal,embryocardia or cacophony of vas; two pair of ear tips with different hardness; two different size spare membranes. The attached transparent multi-pocket bag includes.
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