AFD Technology and a sculpted chestpiece make this the ultimate acoustic stethoscope. The Adscope® 600 series features: ADC’s AFD Technology provides the acoustic response of a traditional bell and diaphragm in a convenient one-sided chestpiece Light pressure for low bell-type frequency, firm pressure for diaphragm type high frequency Sculpted chestpiece precisely CNC machined to exacting tolerances from surgical stainless steel for outstanding performance and rugged durability and impressive ergonomics Non-chill diaphragm retaining rim for patient comfort. Cardiology headset with large bore stainless steel binaurals are fixed at 15° angle to maximize comfort and acoustic seal (Tactical model with aluminum binaurals) Bi-lumen (dual bore) 19" PVC tubing stays soft and flexible Adsoft™ threaded PVC eartips for the ultimate in wearing comfort and acoustic seal Tactical model uses black anodized aluminum aural tubes Gold plated model comes with deluxe zippered case. Accessory kit includes additional Adsoft™ and standard eartips Scope ID Tag included Weighs 7.15 oz. (203 g) Overall length 27" Assembled, inspected and packaged in the USA Lifetime Warranty covers all parts