Adscope 612 Series Stethoscope Turquoise Blue Medical Nursing Student Supplies AFD technology and light weight make this a practitioner favorite. The Adscope® 612 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 high, diaphragm-type frequency Sculpted chestpiece machined from lightweight zinc alloy plated with an attractive satin finish Non-chill diaphragm retaining rim for patient comfort Clinician headset with stainless binaurals and reinforcing yoke molded into the flexible 22" PVC tubing #adc #adscope #stethoscope #medicalstudent #nursingstudent