How to know if your Littmann stethoscope is original (please read description)

App Store link 3M Littmann Learning Institute by 3M Company https://apps.apple.com/us/app/3m-litt...
Play Store link https://play.google.com/store/apps/de...
I didn’t show the full code on my stethoscope.
Thanks for watching my video.
#fakestetho #littmann