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 15 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 Weighs 6.5 Oz. Overall Length 31 Lifetime Warranty