It measures 40,5mm without crown with a 13mm thickness. The nicely done SS bracelet, with a very smooth finish, has a quick release mechanism and is fixed to the case by four allen screws.
The bezel is easily replaceable unscreweing by four allen screws. Breitling models had two bezels, a stainless steel one and an acrylic black one. Eberhard models had only the SS one. They had two types of bracelets as well, SS and rubber one.
The watch has a very distinctive HRV. When the dot on the caseback is aligned with a dot on the case it means that the caseback gasket is able to release the helium. First time I see anything like that.
The watch came back some days ago form servicing by Eberhard, here in Milan, with a spare NOS bezel. Ready for diving

Here are some pictures. The last one is of the Breitling model, with acrylic bezel and rubber bracelet.




