Please read description carefully.
Do not base your order on the picture presented.
Features of the 3M Littmann Cardiology III Stethoscope:
One side sized for adults and the other side sized for pediatrics.
Both the large and small side allows you to hear either low or high frequency sounds by simply applying varying pressure - light pressure for low sounds or firm pressure for high sounds utilizing 3M’s own tunable technology. And, you can easily convert the stethoscope to a traditional open bell style by removing the diaphragm on the pediatric side and installing the rubber nonchill sleeve which is included with purchase.