Video guide on link strapUpdated a year ago
In order to adjust the length of the link strap, a professional tool is required to add, or remove the links. Therefore, if you need to adjust the link to fit your wrist perfectly, you should go to any watch shop or jeweler, and bring the additional links you have received in the box. It depends on the store, but most will be able to perform the adjustment for free or for a small fee. The adjustment of the link will not void the warranty, however, you can no longer return, or exchange the strap.
Here you can see the video guide on how to attach and close link strap