Purchase Qty. Reference FOB Price
10-99 Pieces US$16.90
100-499 Pieces US$2.50
500+ Pieces US$2.30
Product Description
Product Description Main performance 100 Hz ~ 500 Hz as the reference of the testing sound source: Outer diameter of auscultation head > 35 mm, damping ≤ 16 dB 500 Hz ~ 1000 Hz as the reference of the testing sound source: Outer diameter of auscultation head > 35 mm, damping ≤ 20 dB ...