Rolex Lady-Datejust 178240 Black Dial 31mm Midsize Steel
- Credit & Debit Card— Visa & Mastercard
- Cryptocurrency— Bitcoin, USDT & more
256-bit SSL encrypted · plain, discreet packaging on every order
Your Order, Fully Protected
- Free reshipment if your package is seized in customs, lost, or damaged in transit
- QC video before shipping — you approve every watch before it leaves our facility
- 100% discreet packaging — plain box, no branding, nothing revealing the contents
- Full order tracking with status updates by email
- Responsive support — we reply within 24 hours
Will it fit your wrist?
At 31 mm, this watch fits a 11-14 cm (4.5-5.5 in) wrist. Most Rolex bracelets adjust to your size by adding or removing links, so the fit is not a fixed length.
Tell us your wrist size when you order (add it in the order notes) and we pre-size the bracelet before it ships — it fits the day it arrives, no jeweler.
Measure your wristThe 31mm size slot is Rolex's "midsize", wider than the 28mm Lady-Datejust, narrower than the men's 36mm. Reference 178240 sits in this middle range, sized for wrists that find 26-28mm too dainty but 36mm too broad. The case is full stainless steel rather than two-tone, which keeps the visual weight down.
Black lacquer dial with applied baton indices and matching steel hands. Smooth domed bezel in steel (the listing notes fluted, and the fluted variant of 178240 was offered as a factory option, giving slight texture without the gold-tone contrast). Cyclops magnifier over the 3 o'clock date. Sapphire crystal, 100m water resistance from the screw-down Twinlock crown.
