Size Guide
Grand Seiko Official Online Store
Please have a measuring tape ready to measure your wrist size.
With your hand slightly open and relaxed, wrap a measuring tape around thewrist where you will wear your watch and measure your wrist size.
Be careful not to wrap it too tightly or leave any gaps between your wrist and themeasuring tape.

Regarding band adjustment for the watch you purchased
- When ordering a metal band model from our online store, band adjustment will be handled at the time of order. Please check your wrist size using the "How to Measure Your Wrist Size" instructions above and specify your size. The size of the watch you receive will be adjusted to approximately 5mm larger than the wrist size you specified.
- When ordering a metal band model from our online store, band adjustment will be handled at the time of order. Please check your wrist size using the "How to Measure Your Wrist Size" instructions above and specify your size. The size of the watch you receive will be adjusted to approximately 5mm larger than the wrist size you specified.
- Band size adjustments are available at Grand Seiko retailers nationwide. However, a separate band adjustment fee will apply. Please check the "Store Locator" for a list of Grand Seiko retailers nationwide.
