Rolex Sky-Dweller is a watch that was introduced in 2012 and has since then become one of the most popular timepieces in the world. It is a particularly large watch, measuring 42mm in diameter and 14.1mm in thickness. The case is made of Oystersteel, which is Rolex's proprietary stainless steel alloy, and features a fluted bezel that is characteristic of many Rolex watches. The Sky-Dweller is a heavy watch, weighing in at just over 150 grams, or about the weight of a typical men's dress watch.

One of the unique features of the Sky-Dweller is its complex movement, which is known as the Caliber 9001. This movement has 40 jewels and includes features such as a dual-timezone display, an annual calendar, and a month indicator. The watch is also equipped with Rolex's proprietary Paraflex shock absorbers, which help protect the movement from shocks and vibrations.
The Sky-Dweller is a versatile watch that can be worn for both casual and formal occasions. It comes with a variety of straps and bracelets, including a three-piece link Oyster bracelet, a leather strap, and a rubber strap. It is water-resistant to a depth of 100 meters, which means it can be worn for swimming or snorkeling.
Overall, the Rolex Sky-Dweller is a high-quality and luxurious timepiece that is both functional and stylish. Its large size and complex movement make it a watch that will appeal to collectors and enthusiasts, while its versatility and durability make it a watch that can be worn every day.