Patented Two-tone Stainless Steel Stethocope

1. On the same auscultation surface, doctors can hear two different audio frequencies by applying different pressures to the same position.(The stethoscope works by this principle and can be used to confirm heart murmurs and diagnose fine and wet rales for doctors of department of cardiology and department of respiration.)

2. The hose made of natural PVC has a softness degree of 38-45 and is durable and hard of aging for doctors' comfortable use. The earplugs of natural mould silica gel in accordance with the auricle physiology curve avoids doctors' fatigue for long wearing; they have fine sealing features and avoid sound leakage. 2 pairs of earplugs are suitable for doctors with auricle differences.

3. The terrific sealing structure for shafts to withstand air pressure of 2 Pascal without leakage makes the stethoscope the only domestic that meets EU quality standards. 800-1500hz with sound drop<1.5; 80-500HZ with sound drop <6.2dB.