Authentic Cartier Tank watch with model number wgta0091. Features an 18K yellow gold case finished with brushed and polished surfaces, a fixed bezel, black lacquered dial accented by polished yellow gold tone hands, blue sapphire crown, and a solid case back. Equipped with an elegant leather strap (specifically alligator leather) and features a rectangle case shape measuring 33.5mm x 25.4mm in size with a thickness of 6.35mm. Powered by Swiss manual winding movement using Cartier Calibre 1917 MC engine, offering 38 hours power reserve. Includes hour, minute, and pull/push functions. Water resistant up to 30 meters (approximately 100 feet). Comes with a 2 year WatchMaxx warranty.