Due to the "nose" as an oscillating head increases the sensitivity of the membrane clearly. Based on standard stethoscopes with 35 mm membrane and opposed funnels (25 or 30 mm).
Included: replacement membrane no face and 4 soft ear tips.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.