For those who does not know the history of the brand, Guinand was the producer of Sinn watches when Helmut Sinn was still in charge of the latter.
Thus you'll see a lot of similarities between the 2 brands. But the similarities stops at the outlook.
While Helmut Sinn; a pilot, makes watches that he himself would use with no fuss, Lothar Schmidt; an engineer focus more on the materials. Thus you can see the diverging path of both brands.
I would say the finishing of the calibre on a Guinand is more "polished" than a Sinn.
While Sinn makes tough watches for "tough men" Guinand makes watches for the gentleman aviator and rally driver. Which incidentally is Helmut Sinn himself.
Slight customization can be arranged with a combination of dials, case and hands. Just drop send an email to Matthias; the person in charge.
The Guinand chronos wears better on my wrist compared to the same offerings from Sinn. This is because of the absent of Faraday anti magnetic cage in the Sinn models which makes it very thick and wears high.
According to Matthias Klüh, they practice a very transparent parts acquisition with all vendors are from within Germany. Thus the nationalistic print on their dials "Hergesttellt in Deutschland" which I find is very befitting.
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