I NO LONGER LIVE IN THE UNITED STATES.  THEREFORE MANY THINGS WHICH I PREVIOUSLY HAD TAKEN FOR GRANTED ARE MAJOR PROBLEMS IN OTHER COUNTRIES.  CHANGING A WATCH BATTERY IN THE US, IS A SIMPLE
MATTER OF VISITING YOUR LOCAL JEWELER AND CHANGED WHILE YOU WAIT.  SINCE I NO LONGER HAVE ACCESS
TO JEWELERS WHO SOLVE YOUR ISSUE ON THE SPOT, THIS ITEM IS PRICLESS.
IT IS EASY TO USE TO REMOVE THE BACK OF WATERPROOF WATCHES AND ALLOWING YOU TO CHANGE YOUR OWN BATTERY.
A MUST HAVE FOR ANYONE WHO OWNS MORE THAN ONE BATTERY POWERED  WATERPROOF WATCH