Opening a watch back is the process of removing the back cover of a watch in order to access the watch’s internal components. This may be necessary for a variety of reasons, such as replacing a battery, repairing a movement, or simply cleaning the watch. There are a number of different tools and techniques that can be used to open a watch back, depending on the type of watch and the construction of the back cover.
It is important to note that opening a watch back can be a delicate procedure, and it is important to take care not to damage the watch or its components. If you are not comfortable opening a watch back yourself, it is best to take it to a qualified watchmaker.