Fits For following Casio models:
For Seiko V137
For Seiko V138

To check whether this capacitor will fit your watch, please check the calibre reference on the back case of your watch. This is usually in the format XXXX-XXXX with the first 4 digits indicating the module reference. If you do not see your calibre reference listed below, it will not fit your watch.

How to find the Seiko movement number:
Seiko movement numbers are located on the back of your watch case. It is usually in XXXX-YYYY format with "XXXX" being the movement number.
The movement number can also be found on the watch movement itself (may require magnifier).