Twin Teaching Stethoscope with Double Dual Head Design for Ages 8 & Up

Double dual head design makes it possible for two people to use it at the same time!

It is great for parents to use with their kids. Also a perfect material for students while teaching them how the heart works.

You are able to listen to the crystal clear sound of a heartbeat, try it on your friend or pet!

Features:

• Applicable to listen to the human heart, lung, and other organ activities with sound changes.
• Soft and comfortbale ear plugs, no pressure for the ear bone.
• High quality zinc alloy material.
• Well sound transmission.

How to Use:

• Be in a quiet and warm room, you can place the stethoscope directly on testee's chest.
• There are two sides that can be placed against the testee for sensing sound; a diaphragm (plastic disc) or bell (hollow cup).
• Switch the diaphragm or bell mode to use. When the plastic disc is used, the hollow cup will be closed and vice versa.
  

Curious Minds Did You Know? The first stethoscope was invented in 1816 by French doctor Rene Laennec and consisted of a wooden tube, similar to an ear trumpet (used by those who were hard of hearing).

Suitable for ages 8 and up.