OCHSTIN Day-Date 40mm – Automatic Watch
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Mechanical elegance for everyday life.
The OCHSTIN Day-Date Automatic 40mm combines a reliable automatic movement, a full day and date display, and a leather strap that develops a patina over time. A classic 40mm size, dressy without being ostentatious — the ideal watch to mark every day with elegance.
Office, dinner, weekend: the Day-Date 40mm adapts to any setting with discretion and character.
✦ Highlights
- Automatic movement — no battery needed, powered by your movement
- Day and date display — complete calendar at a glance
- 40mm case — classic and versatile size for all wrists
- Genuine leather strap — immediate comfort, unique patina over time
- Dress style — perfect for both the office and evening wear
- 3 ATM water resistance
⚙️ Technical specifications
| Movement | Automatic (no battery) |
| Display | Time + Day + Date |
| Case diameter | 40 mm |
| Case | Stainless steel |
| Strap | Genuine leather |
| Water resistance | 3 ATM |
| Colors | Blue, Black, Silver Black, White |
🛡️ Our commitments
| 🚚 Free shipping everywhere, no minimum |
↩️ 14-day returns satisfaction guaranteed |
🔒 Secure payment SSL & 3D Secure |
⭐ 2-year warranty legal warranty of conformity |
❓ Frequently asked questions
Is 40mm a suitable size for my wrist?
40mm is the most universal size in men's watchmaking. It fits average-sized wrists (16–18 cm in circumference). Too small = less than 38mm, too big = more than 44mm. 40mm remains the safest choice for the majority of men.
How does the watch display the "day"?
The day (Monday, Tuesday...) is displayed in a dedicated window on the dial, generally abbreviated (MON, TUE...) or in English depending on the configuration. The numeric date is shown in a separate second window.
Is this watch suitable for daily professional wear?
Absolutely. The 40mm dress style with a leather strap is one of the most widely accepted designs in professional environments. Discreet, elegant, never ostentatious: exactly what you need on your wrist for meetings or appointments.
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OCHSTIN Day-Date 40mm — The watch that marks every day.