Cartier, Tortue, Model: WGTO0002, manual mechanical, 18k rose gold, diameter: 44.95*36.1 mm • Series: Cartier Tortue (Cartier's classic antique wristwatch, first generation born in 1912) • Material: 18K gold case, black bambus-patterned alligator leather strap, crown set with sapphire beads Dial: Silver-white guilloche radiating dial, Roman numeral hour markers, blue steel hands, no date design Movement: It is available in three versions: quartz, manual mechanical, and automatic mechanical. The common styles shown in the picture are the automatic version and the classic CPCP manual collectible version Case design: The iconic barrel (tortoise shell) outline is a representative single watch of Cartier's irregular dials.