The Squale 1521 Ocean COSC 1521COSOCN is a high-performance dive watch designed for professional divers and adventurers who demand the highest levels of accuracy and reliability. This watch is a certified chronometer, meaning that it has been tested and certified by the Swiss Official Chronometer Testing Institute (COSC) to meet the highest standards of accuracy.

The 42mm case is made of durable stainless steel, with a brushed finish that gives it a sleek and modern look. The watch is water-resistant up to 500 meters, making it ideal for diving, swimming, or any other water-based activity.

The blue dial is protected by a scratch-resistant sapphire crystal, and it features luminous hour markers and hands for easy readability in low-light conditions. The watch is powered by a Swiss-made ETA 2824-2 automatic movement, which provides accurate timekeeping and ensures that the watch is always ready for action.

The Squale 1521 Ocean COSC also features a comfortable and durable black rubber strap, which is designed to withstand the rigors of diving and other demanding activities. The strap is easily adjustable, and the watch comes with a deployment clasp for added convenience.

Overall, it is a highly accurate and reliable dive watch that is designed to perform in even the most challenging conditions. Whether you're a professional diver or simply someone who demands the best in terms of accuracy and performance, the Squale 1521 Ocean COSC 1521COSOCN is an excellent choice.