You can buy watches like this in Chrono24.

• Mechanical self-winding movement
• Caliber 324 S IRM QA LU
• Annual Calendar
• Day and month by hands, date in an aperture
• Moon phases
• Power reserve indicator
• Sweep seconds hand
• Cream dial, gold applied hour markers and numerals
• Fold-over clasp
• Sapphire-crystal case back
• Water resistant to 30 m
• White gold
• Case diameter: 39 mm