Rolex Cosmograph Daytona Arolla Project Style Skeleton Blue Sapphire Bezel 40mm draws inspiration from contemporary haute horology, seamlessly blending the iconic Daytona chronograph design with an open-worked skeleton aesthetic to create a bold and luxurious sports timepiece. The blue skeleton dial showcases the intricate mechanical architecture beneath, while the royal blue gemstone-style bezel adds exceptional depth and brilliance, delivering a striking appearance from every angle.

The 40mm case is crafted from 904L stainless steel with a combination of polished and brushed finishes, paired with the classic Oyster three-link bracelet for outstanding comfort and versatility. This model is available in two diamond options to suit different preferences: the Lab-Grown Diamond Version is equipped with the high-performance 4801 automatic movement, featuring carefully selected lab-grown diamonds that offer exceptional brilliance and a refined appearance. The Moissanite Version is powered by the Swiss 4130 automatic chronograph movement and features premium hand-selected moissanite stones, delivering enhanced fire and sparkle. Both lab-grown diamonds and moissanite stones are compatible with diamond testers, providing a visual appearance remarkably close to natural diamonds.

Powered by either the 4801 automatic movement or the Swiss 4130 automatic chronograph movement depending on the diamond option selected, the watch delivers stable and reliable performance. The chronograph version features a central chronograph seconds hand, 30-minute counter, 12-hour counter, and running seconds subdial, faithfully recreating the functionality and layout of the original design. The anti-reflective sapphire crystal provides exceptional clarity, allowing the skeleton dial to be admired in full detail, while everyday water resistance makes it suitable for daily wear.