Changing a watch battery is an easy procedure if you follow these steps.

Always examine the watch before opening the back of the case. If the watch experienced water damage or if the watch hands or stem is loose you may need to have it repaired by a professional watchmaker. If you notice the hands are jumping in multi-second increments, this is a sign that a battery replacement is necessary. If you have a pulse tester, use this to determine if the battery is dead or if the watch needs to be repaired. This will eliminate the need to unnecessarily open the watch. Always clean the case back before opening the watch. This will prevent and dirt from entering the watch movement when the back is removed. A small brush or toothbrush can be used to lightly remove the debris from the watch. If you have compressed air you can use this to blow the dirt free. Always use the proper tools to repair your watch.

If the case is a screw back, the dirt can easily fall onto the thread and make closing the watch very difficult. Then it is important to determine the type of case back that is on the watch. Once this is determined follow the steps below. Always be careful when removing the watch back. Most watches have a gasket that prevents water from entering the case. Always return this to the correct position when you close the watch.

How to change a watch battery, this guide as a pdf       How to change a watch battery, an instructional video      

Watch Battery Handling Precautions       Rayovac Watch Batteries