Use a damp cloth soaked in a mixture of cold water and soap to pet your Mendi clean.
Ensure that there's no dirt or grease on the sensors (the black part on the inside of your Mendi).
Bonus tip: the strap is detachable.
. 
Use a damp cloth soaked in a mixture of cold water and soap to pet your Mendi clean.
Ensure that there's no dirt or grease on the sensors (the black part on the inside of your Mendi).
Bonus tip: the strap is detachable.
.