How to make a real Stethoscope using waste headphone(it's really works)

Here i have provided the detailed information about how to prepare home made stethoscope by using waste mobile headphone. Its just for small level school projects. This can help your child mini project or something else. Thank you for watching.... Subscribe to our How-to-Raju Channel here:    / sachinsfanrajkumar   for more videos visit our website: http://www.howtoraju.com/