Day-Date 40 Platinum Bright Black Diamond unworn maintaining its vibrant color over

maintaining its vibrant color over time

The Oyster Perpetual Explorer

quickly and securely

Just a year after its launch

Day-Date 40 Platinum Bright Black Diamond unworn maintaining its vibrant color overTHE ULTIMATE WATCH OF PRESTIGE The Oyster Perpetual Day Date is the most prestigious and most exclusive watch in the Oyster Perpetual collection. At its launch in 1956, the Day Date was a major innovation: it was the first calendar wristwatch to indicate, in addition to the date, the day of the week spelt out in full in a window on the dial a technical feat at the time. The Day Date has only ever been made from precious metals 18 ct yellow, white or