The Rolex Cosmograph Daytona 126599RBOW, often referred to as the "Rainbow Daytona," is a highly sought-after luxury timepiece renowned for its vibrant design and exceptional craftsmanship. Introduced as an evolution of the earlier 116599RBOW model, this watch features a 40mm 18k white gold case adorned with a bezel set with baguette-cut sapphires in a gradient of rainbow colors. The dial is paved with diamonds, complemented by gem-set hour markers, and protected by a scratch-resistant sapphire crystal. Powered by Rolex's in-house automatic Caliber 4130 movement, it offers a power reserve of approximately 72 hours and is water-resistant up to 100 meters (330 feet).​