Apple announces the Apple Watch Ultra. #AppleEvent

Apple says the Apple Watch Ultra has the biggest battery of any watch yet, with up to 36 hours of battery life on a single charge. #AppleEvent

The Ultra is a more rugged watch designed for outdoor adventurers. Its titanium case is designed to protect against edge impacts, and Apple says it has the biggest and brightest display yet. #AppleEvent

The Apple Watch Ultra has cellular connectivity built-in, and a new "action button" for more controls. The buttons are designed to be used with gloves, and it can support up to 60 hours of battery life. #AppleEvent

The Apple Watch has seen evolutions since it debuted in 2015, but the Apple Watch Ultra may be the biggest change of all. There's a new dedicated second button, an improved speaker, and a clear ruggedized design. #AppleEvent cnet.co/3qjGrpa

The Apple Watch Ultra at a glance. #AppleEvent

You can order the Apple Watch Ultra starting today, and it will be available on September 23 for $799. #AppleEvent

The Apple Watch Ultra is now a dive computer too, with the Oceanic+ app. #AppleEvent

@CNET Is the app subscription based