This is a great question and the size may vary due to your fit and comfort preference.
We offer different options to help you select your proper wrist size.
You could print our measuring guide PDF at https://citizenwatch.widen.net/s/qjnksldm5r/wristsizingkit
Or you could follow our video tutorial on youtube showing how to measure your wrist using either a flexible measuring tape or a ruler and a piece of paper.
You can view the video here https://www.youtube.com/watch?v=hcwMqeTiapI&t=2s
Note: When selecting a band size, please note that any links removed will be sent back with your order should you need to have it adjusted.