This Stethoscope is a lightweight, great quality economical stethoscope. Externally sprung binaural for ease of positioning and greater comfort. A lightweight, great quality, economical stethoscope. A great way for children to listen to there own heart beats and become comfortable with the Stethoscope and understand its something that will not hurt them at future medical appointments. A great way to encourage imaginative play. So you are actually becoming a real doctor with this amazing Stethoscope.