The black ISOfrane with DLC buckle seems right at home on my Sinn U1 SE! I purchased the watch with a Sinn leather strap, which is a nice option for cooler days but wanted a rubber strap for hot weather and being in and around water. I prefer the fit and feel of this over the Sinn silicone option which I nearly went for, and it feels sturdy and built to last. Maybe I’ll have to get another one in a different colour… Thanks!
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