One of our most popular acoustic scopes the ADC Adscope 603 Clinician Stethoscope with AFD Technology combines outstanding performance with rugged durability. The combination diaphragm/bell chestpiece is precisely machined to exacting tolerances from surgical stainless steel. Use the ultra-sensitive diaphragm for greater amplification and crisper high-frequency transmission or the extra-large bell for unsurpassed low-frequency response. The clinician headset features reinforcing yoke molded into flexible phthalate-free PVC tubing stainless binaurals and Adsoft Plus snap-on silicone eartips for the ultimate in wearing comfort and acoustic seal. Includes a scope ID tag and two additional pairs of Adsoft Plus eartips in a convenient storage case. Lifetime warranty and free parts forever.