Diving watch
SINN was the first company in the watchmaking industry to manufacture diving watches in compliance with European diving equipment standards, and the first to test and certify them for pressure resistance, water resistance and resistance to fogging.
![](https://www.sinn.de/out/pictures/ddmedia/gravity/SINN_U50_HYDRO_Gruppe.jpg?width=640&height=360&quality=100)
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Models