Contec SC23 Classic Type Dual Head Stethoscope Adult (White) 3 Fold Screen Test strips come in a

Test strips come in a in a 10

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Contec SC23 Classic Type Dual Head Stethoscope Adult (White) 3 Fold Screen Test strips come in aIt is used to collect and amplify the sound inside body organs like heart, lung, arteries, vein, etc., which is applicable for use in hospital, clinic, examination institution, ambulance, home and camping rescue, etc. Main performance 100 Hz ~ 500 Hz as the reference of the testing sound source: Outer diameter of auscultation head 35 mm, damping 30 dB Outer diameter of auscultation head > 35 mm, damping 16 dB 500 Hz ~ 1000 Hz as the reference of the