The 228348 is the kind of Rolex that will turn heads, with diamonds that shine through in any room. The 228238 has a 40 mm case with a monobloc middle case, screw-down case back and winding crown. It comes with a sapphire crystal and diamond-set yellow gold bezel. The 228238 timepiece has a black dial with ten baguette hour markers, a date window at 3-o-clock and day window at 12-o-clock. This Rolex Day-Date runs on the signature Rolex caliber 3255, which has an instantaneous day & date functionality, a precision of 2/+2 sec/day and a power reserve of 70 hours. The 228238 cases is paired with a president bracelet which has semi-circular three-piece links and a concealed folding crown clasp. It has a water resistance of 100 meters (330 feet).