Hello and good day,
my honest opinion is that the watch is qite nice and cool, I like huge divers watches and I also own 2 vintage pieces from Sinn he sold in the 1970s. One of these 2 for example uses the same case the Blancpain 50 fathoms Military watch uses (crown at 4).
On the new limited Caliber 12 watch I have to admit that the Name and Label Guinand just does not justify this price. We all surely like to invest our hard earned Dollars, Euros or Yen on a in value basis durable watch. But unfortunately the Chronosport and Guinand watches Mr. Sinn is assembling since he sold Sinn, are far away from the ones produced under the brandname Sinn regarding reputation and other market relevant characteristics. This is surely just my personal opinion. I`d always prefer to spend maybe 800.- US$ for a vintage Diver Sinn than a 4 times higher price for a limited new watch.
Sincere greetings,
Ralf