Unfortunately we do not provide instructions to adjust your watch bracelet and recommend all sizing is completed by a watchmaker to prevent accidental damage occurring. You can find a local authorised retailer to assist you adjusting your watch bracelet by entering your postcode here https://uk.bulova.com/store-locator/
Alternatively, you are welcome to send your watch to our Bulova UK service centre by registering and following the steps here www.citizenwatchservice.co.uk