Key Features . Titanium CaseTested to MIL-STD 810HIP6X dust resistancewatchOS 9Built-in GPS to track activity and share your location!Compatible with iOS SmartphonesWater resistant to 100 metres . Looks tough.Because it is.To build the ultimate sports watch we crafted every element with painstaking attention to detail for unparalleled performance. Titanium strikes the perfect balance between weight ruggedness and corrosion resistance. The new case design rises up to surround the flat sapphire crystal and protect it from edge impacts. The Digital Crown is larger and the side button is raised from the case making them easier to use while youre wearing gloves. The biggest and brightest Apple Watch display ever.Direct sunlight is no obstacle for an Always-On Retina display that's an eye-opening 2000 nits and twice as bright as any Apple Watch. And the bigger display provides more room for workout metrics and detail-packed watch faces Wayfinder watch face with Night mode.Specifically for Apple Watch Ultra the Wayfinder face features a time dial that can be switched to a live compass and has room for eight complications. In low-light situations you can rotate the Digital Crown to activate Night mode and see the watch face turn a vivid red. Ready for Action.The new Action button gives you quick physical control over a variety of functions. Its customisable and can do things like control a workout mark a Compass Waypoint or begin a dive. Just like you its full of potential. Battery life for days.When youre on the second day of a backpacking trip the final leg of a triathlon or diving along a coral reef the last thing you want to think about is running out of battery. With longer battery life than ever you can take on almost anything and have energy to spare. Hike run dive. Theres a strap for that Making the ultimate sports watch for athletes of all kinds required a unique approach. Thats why specialised straps for outdoor adventures endurance training and water sports are as meticulously crafted as the watch itself. Find strength in numbers.Making progress as an athlete requires accurate data and insights. Updates to the Workout app like new metrics and views give you all the information you need to be and beat your best. The larger display lets you see up to six metrics at once. GPS thats truly trailblazing.GPS performance is critical for athletes who want the most precise metrics whether theyre training in urban streets or out in the wild. Apple Watch Ultra features a new precision dual-frequency GPS system that provides amazing accuracy in the most difficult locations. Above. Beyond.And back again.Designed to take on extreme environments elevations and temperatures Apple Watch Ultra is an essential exploration tool that can take you everywhere. And help get you home. The compass reimagined.An accurate compass is as crucial for navigating the wild as a solid pair of boots. The redesigned Compass app delivers all-new views and functionality that take wrist-driven orienteering to new heights. 86-decibel siren. Sonic salvation.If you get lost or injured and need to attract attention hold the Action button to activate a siren that can be heard up to 180 metres away. Groundbreakingeven in the sea.Built to withstand jet-skiing in Maunalua Bay or kitesurfing in Tarifa. Apple Watch Ultra features a new depth gauge. It also delivers the data and functionality required by scuba and free divers for descents down to 40 metres. A fully featured dive computer.Designed in partnership with renowned underwater innovators Huish Outdoors the Oceanic+ app for Apple Watch Ultra puts a bona fide dive computer on your wrist. Made for recreational scuba diving and free diving down to 40 metres with all the core features divers need. Its