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You know it's a Swiss company when they have a page on their website called Discretion
https://roventa-henex.com/about-us/discretion/
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Unlike @Stonehedge, who has none
If anybody is interested, this is the company that makes Norqain.
https://roventa-henex.com/
Edit: Something I didn't know is that Roventa-Henex also own Switec in Hong Kong. I think Switec make some of the boutique dive watches like Helson.