At 30.6mm diameter (exluding the winder) this is a small wrist watch by today's standards. See the picture of it on my small wrist! That said, it's a typical size for the 1930s.
 
The dial is in great condition. It has black printed Arabic hour numerals with dots representing the minutes. Blued steel hands. Sunken sub-dial at 6 for the seconds with a circular Guilloche finish. Signed Omega together with the Omega logo. Manual winding.
 
The stainless steel case is in good condition for an 85-year-old watch. Probably polished in the past. Inside the case back, it's fully marked Omega.
 
The watch is run by the Omega calibre 23.4 15P. It's in very good condition and currently runs just 10 seconds per day, slowly. Incredible!
 
Fitted with a used non-Omega black leather strap.