278288RDP. Yellow gold case, yellow gold bracelet with diamonds on fixed bezel and hour markers/hands. Analog dial displaying date at the 3 o'clock position. Powered by Rolex Calibre 2236 automatic movement (based on Calibre 2235) featuring 31 jewels and a frequency of 28800 vph; approximately 55-hour power reserve. Equipped with scratch-resistant sapphire crystal, screw-down crown, solid case back, concealed fold-over clasp. Water resistant to 100 meters (330 feet). Functions: hour, minute, second and date display.