Combination pediatric chestpiece precisely machined to exacting tolerances from surgical stainless steel for outstanding performance and rugged durability. Extra large bell for unsurpassed low frequency response. Ultra sensitive diaphragm for greater amplification and crisper high frequency transmission. Non-chill bell and diaphragm retaining rim for patient comfort. Reinforcing yoke molded into flexible 22" PVC Y tubing. ADSOFT deluxe PVC eartips. Spare diaphragm included. Weighs 5.25 oz. Overall length 30.5". Lifetime quality performance guarantee. Latex free.