My Sinn EZM1 on a Di-Modell Chronissimo strap. I find this far more practical than the OEM titanium bracelet which I also want to preserve. Sinn sell a "Chronissimo" strap, at least they did a couple of years ago, which looked to be a re-badged Di-Modell with the only difference of any significance being the Sinn name on the buckle. I bought one but it was too long which is why I'm on the Di-Modell. Highly recommend this strap whether from Sinn or Di-Modell.
Another shot showing more of the strap...
... and here's my EZM1.1 on a red Hirsch Ayrton performance strap. Sinn's OEM rubber strap is too heavy for me, this is light & strong, rinses easily and the red on the strap matches the red elements on the dial very well.