Questions & Answers for: gunk Watches

...watch/hrm replacing the battery in my polar s725, the chamber for the altitude sensor is full of gunk. do i clean all that out? does the chamber need to be filled with grease or anything? "Gunk"

...one-quarter micron buffing diamond paste for finishing.Use a toothpick to remove excess polish and gunk that may accumulate between the crystal and the bezel that secures the crystal in place.