Convertible chestpiece provides adult diaphragm/bell or adult/pediatric diaphragm configurations Combination diaphragm/bell adult chestpiece precisely machined to exacting tolerances from surgical stainless steel for outstanding performance and rugged durability ADC?s AFD technology provides enhanced acoustic response: light pressure for low bell-type frequency firm pressure for high diaphragm-type frequency Extra-large bell (1 3/8 diameter) for unsurpassed low-frequency response Ultra-sensitive diaphragm (1 3/4 diameter) for greater amplification and crisper high-frequency response Non-chill bell and diaphragm retaining rims for patient comfort Clinician headset boasts reinforcing yoke molded into flexible 22 PVC tubing and stainless-steel binaurals fixed at 15§ angle for greater comfort Tubing is soft flexible and made without phthalates Adsoft? Plus silicone eartips with new snap-on connections for the ultimate in wearing comfort and acoustic seal Includes accessory kit with two pairs of spare Adsoft? Plus eartips Scope ID Tag included Weighs 5.8 oz (164 g) Overall length 31 Assembled inspected and packaged in the USA Lifetime warranty covers all parts