The ability to measure the temperature of the water as you dive, swim, and do other water sports is one of the new features of the Apple Watch Ultra.

The Apple Watch Ultra has features and design elements specifically designed for swimmers, divers, and athletes. The new Apple Watch Ultra is the most water-friendly Apple Watch on the market, as well as being the international standard for diving accessories.

Divers can use the Depth app to see a number of metrics, including current depth, elapsed time, the current water temperature, and the amount of time spent underwater. The Depth app on the Apple Watch Ultra can be opened underwater, making it easy to get important information.

The Apple Watch Ultra was available for pre-order after yesterday's event. The Apple Watch Ultra will be available for purchase on September 23.