Cardiology Stethoscope Black Dual-Frequency

Stainless steel single-sided chestpiece with dual-frequency diaphragm * Specially designed membrane lock within the chestpiece alters the diaphragm to achieve dual-frequency * Hold the chestpiece to achieve low frequency response (similar to dual-sided bell chestpiece) * Apply firm pressure to achieve high-frequency diaphragm response * Comfortable non-chill ring * Lightweight stainless steel binaurals with internal spring * Extra-thick cardiology 19 latex-free Y-tubing * Deluxe eartips * Lifetime Warranty * Compare with 3M Littman 3M2160