The Rolex Air-King honors the trailblazers of aviation and commemorates the pivotal role of the Oyster in the grand narrative of flight. The model you're considering is produced by the esteemed Clean Factory, renowned for crafting the most flawless Rolex timepieces. Detailed product specifications : Factory made: Clean Factory Wish List 0 Bracelet Material 904L Steel Case size:40mm Luxury Watch Air King M126900-0001 1:1 Best Edition Clean Factory Black Dial Glass: Scratch resistant sapphire Luxury Watch Air King M126900-0001 1:1 Best Edition Clean Factory Black Dial Movement Note: Functions as original.