Master Watch Resizing: Seiko 6139-7100 Watch Bracelet Adjustment Tutorial


Grand Tyme Master
Founding Member
Jul 17, 2014

Master Watch Resizing: Seiko 6139-7100 Watch Bracelet Adjustment Tutorial​

Mar 26, 2024

In this tutorial, we're going to guide you through the simple steps of resizing the folded link bracelet on your Seiko watch. By focusing on the Seiko 6139-7100, also known as the "Darth Vader Helmet" for its unique case design, we'll demonstrate the fundamental structure and techniques involved in shortening a watch band. As you gain understanding from our demonstration, you'll discover that these skills are versatile and applicable to a wide array of similar watch bracelets. This newfound knowledge will equip you to adjust numerous watches in your collection, offering convenience and sparing you extra visits to the jeweler.

Whether you are a newcomer to watch collecting or an experienced enthusiast looking to fine-tune your skills, our tutorial is tailored to demystify the resizing process. We provide clear, easy-to-follow instructions that will empower you to adjust your watch band for the perfect fit, using the Seiko 6139-7100 as our example.


- The tools you'll need for resizing your Seiko bracelet
- How to identify the removable links
- The correct method to remove the pins safely
- How to reattach the links for a perfect fit

Whether this is your first time adjusting a watch bracelet or you're looking to brush up on your skills, our tutorial is designed to make the process straightforward and hassle-free. So grab your Seiko, your tools, and let's get started!

- Watch Bands Straight-end / Flat-head Watchmaker Small Screwdriver
- Spring Bar Watch Band Tool for changing watch straps

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:)Thanks for posting this up, Mike. :hat:
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