3M Littmann Lightweight II S.E. Stethoscope,3M Littmann Lightweight II S.E. Stethoscope,3M Littmann Lightweight II SE Stethoscope, 2450, 28,3M™ Littmann® Lightweight II S.E. Stethoscope – BV Medical,Littmann Lightweight II S.E. Stethoscope: Black 2450