Amazon.com: Welch Allyn 5079-139 Estetoscopio profesional para adultos, color borgoña, pieza torácica de doble cabeza, tubo de un solo lumen, 28 pulgadas : Industrial y Científico
Amazon.com: Welch Allyn for Students Harvey DLX Adult Cardiology Stethoscope, Black; 5079-325; Double-Head Chestpiece (Diaphragm and Bell), Dual Lumen Tubing; 28 in. : Industrial & Scientific
Amazon.com: Welch Allyn 5079-139 Adult Professional Stethoscope, Burgundy, Double-Head Chestpiece, Single Lumen Tubing, 28" : Industrial & Scientific