White Gold Patek Philippe Calatrava wristwatch (model 5127G-001), automatic mechanical movement, self-winding with Perpetual oscillating regulation and 49 jewels. Features a sapphire crystal protective caseback displaying the Patek logo and serial number, scratch-resistant dial finish, unidirectional rotatable bezel despite Calatrava classification (verify standard features). Includes date function at the 3 o'clock position via an aperture with magnifying lens. Water resistant up to 100 meters / 330 feet.