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 the wrist 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 the measuring tape.

Regarding band adjustment for the watch you purchased
- When ordering a metal band model from our online store, please check your wrist size using the "How to Measure Your Wrist Size" instructions above.
- Band size adjustments are available complimentary at Grand Seiko Boutique Marina Bay sands.
