Rolex Datejust 31 mm

Rolex Datejust 31 mm, reference 278240-0004, cased in steel with a 31 mm diameter. The case has a domed bezel and holds a scratch-resistant sapphire crystal with a Cyclops lens over the date. Inside is the self-winding calibre 2236, a chronometer with a power reserve of approximately 55 hours. The screw-down crown protects the movement, and a central seconds hand runs alongside the date function on the white dial. The watch is fitted to a steel Jubilee bracelet closed by a concealed folding Crownclasp. This is a women's watch built for daily wear rather than display. Water resistance reaches 100 metres, a rating the screw-down crown helps maintain.