MDF 747 DUAL HEAD Stethoscope for internal medicine, dark green (MDF13)

Extremely light.
A very light stethoscope intended for all healthcare workers. The adjustable lyre is made of chrome-plated brass. Reversible head. The extremely light double-sided head made of anodized aluminum and chrome-plated brass provides good acoustic parameters and traditional methods of auscultation through the diaphragm and funnel.
Innovative technologies. 
The diaphragm is made of ultra-sensitive sound-amplifying fiber. Perfect tightness of the membrane is ensured by the membrane retention ring, which creates optimal amplification and a high frequency of heart and lung transmission at frequencies of 100 to 1000 Hz. A very large funnel with a non-cooling ring provides excellent acoustic transmission and isolation of low frequency sounds. The membrane is convex with a durable support ring made of non-cooling PVC material for greater patient comfort.
Other technical data.
Head technology - double-sided.
Large membrane - diameter 4,5 cm.
Small membrane / funnel - diameter 3,3 cm.
String (lyre) - one channel.
Olives - soft.
Total length - 78 cm.
Device weight 121g.
Lifetime warranty.