The batteries of different watch models are generally different, and there are no rules. No one can help you. You can open the back cover of the watch and take out the battery to see the model number. The model number will be engraved on the battery. If it is a big brand watch, it is better to use the original battery. So before you buy a watch, you need to ask the store if it is.
The model of the battery should be determined before purchasing the battery. The model number of the battery is usually composed of letters and Arabic numerals on the back of the battery. The Swiss silver oxide battery model is 3##, and the Japanese model is usually SR###SW, or SR###W (# represents an Arabic numeral). Lithium batteries are usually numbered CR####.