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Quick videos and guides for your Hartley. Tap a topic to open it.
Your steel bracelet arrives with every link intact so it fits any wrist. We recommend having it sized by a local jeweller or watch repair shop. Removing links needs the right tools, and damage from a DIY adjustment is not covered by the warranty.
Need a hand? Contact us and we will help.
Already know your size? Use our conversion chart.

Wrap a flexible tape snugly around your finger. The measurement in millimetres matches your ring size.
Print our guide on A4 at 100% scale and place your ring on it to confirm the size.
Print the same guide, cut out the ruler and follow the instructions on the page.
Still stuck? Message us and our team will reply within 12 hours.