Seiko - Just in case 35mm is your sweet spot, there are some GS models that fit the bill (the wrist)
Vintage Deco 70's SEIKO 5 Mens Automatic Mechanical 35mm Wrist Watch White and Stainless Steel Japanese Movement - Etsy
The Two Watch Collection: The Grand Seiko SBGW033 130th Anniversary Limited Edition And The A. Lange & Söhne Saxonia Thin 37mm - Hodinkee
Just got this Seiko Arabic dial, this is the smallest case I've got (35mm) . personally it feels very small to me because I've never owned a watch this small, might replace
Seiko 5 Automatic 21 Jewels Grey Dial, 7S26 0530, 35mm Gents Watch – Watch Parts Global
THE WATCH MAN on X: "SEIKO SPIRIT Men's Quartz Watch - Case Diameter 35mm - Ref. 7N48-7000 - Beautiful Patterned Dial - Day/Date Window - Stainless Steel - Water Resistant 5500/- FREE