How to Use This Service Tool
This "Master Service Index" is a programmatic database designed to solve the 6 most common problems in watch repair and collecting.
Step 1: Identify Your Watch Select your model from the list. We support Seiko, Rolex, Omega, Tudor, and even Smartwatches. The database instantly pulls the correct tool sizes.
Step 2: Check Tool Compatibility Before opening a caseback, check the "Opener" card. Using a standard wrench on a Rolex or Tudor will scratch the knurling.
Step 3: Waterproofing & Gaskets Don't guess gasket sizes. Our database lists the specific O-ring diameter (e.g., 31.5mm) so you can order generic replacements.
Step 4: Valuation Enter your serial number (optional) to get a rough production date estimate. The "Market Value" card updates automatically.