Stethoscope 603 Adscope The 603 combines outstanding acoustic performance with rugged durability, now with AFD technology! Stethoscope 603 Adscope Features Combination adult size chestpiece precisely machined to exacting tolerances from surgical stainless steel for outstanding performance and rugged durability Extra large bell (13/8" diameter) for unsurpassed low frequency response Ultra-sensitive diaphragm (17/8" diameter) for greater amplification and crisper high frequency response Color coordinated non-chill bell and diaphragm retaining rim for patient comfort Stainless steel binaurals with double leaf internal spring fixed at 15º angle for greater comfort Reinforcing yoke molded into flexible 22" PVC Y tubing Adsoft deluxe PVC eartips (in small and large) for the ultimate in wearing comfort and acoustic seal Spare diaphragm included Scope ID Tag included