How to change a leather band with spring pins/drilled lugs

This instructional video demonstrates how to change watch straps on a timepiece with drilled lugs, using the Sinn U50DS as an example. It explains how to remove the current strap using the pointed end of the Sinn-supplied tool, designed to depress the spring bars through the drilled holes. To attach a new strap, such as a leather one, the flat screwdriver end of the tool is used to guide the spring bar into place from the back of the watch to avoid scratching. The process is simple and repeatable, allowing users to easily swap bands for a refreshed look.