With a special round body design, this product is intended to be used in identifying high and low heart tones as well as cardiovascular sounds. It's made from imported PVC with high durability and resistance to aging, and the conducting tube features a two-channel design to achieve better conducting performance, enhanced volume and balanced auscultation between two ears. Moreover, it can be easily disassembled and cleaned to avoiding infection of doctors' ears. Acoustically designed for exceptional sound conduction, this set of stethoscope features up-to-date profile, high portability. Heavy walled 22" tubing blocks out extraneous sounds even in the noisiest conditions. The overall length is 32". No color choice.