Seiko M-6 Instructions Manual page 44

Thank you very much for choosing a SEIKO watch.
For proper and safe use of your SEIKO watch,
please read carefully the instructions in this
Keep this manual handy for easy reference.
※ Length adjustment service for metallic bands is available at
the retailer from whom the watch was purchased or SEIKO
CUSTOMER SERVICE CENTER.
The service may also be available on a chargeable basis at other
retailers, however, some retailers may not undertake the service.
booklet before using.