The best Apple Watches of 2024: Expert tested and reviewed

Apple Watch Ultra 2 tech specs: Display Size: 49mm | Battery life: Up to 72 hours | Storage capacity: 64GB | Features: Sturdy titanium case and sapphire crystal face, enhanced safety features including a built-in siren, dual-frequency GPS, works up to 100 meters underwater

The Apple Watch Ultra 2 offers a list of more exclusive features than any other Apple Watch model. The most notable and useful difference between the Ultra and the other Apple Watch models is the larger, brighter, flatter screen that’s covered by a sapphire crystal face and surrounded by a titanium case to considerably increase the amount of wear and tear it can handle. It’s also IPX6 dust resistant, works underwater up to 100 meters (328 feet), and has military grade (MIL-STD 810H) certification for ruggedness. Plus, the Ultra 2 can now handle high altitudes, shocks, vibrations, and temperatures as low as 4 degrees Fahrenheit and as high as 130 degrees Fahrenheit.

Review: I spent a week with the Apple Watch Ultra 2 and here’s what stood out the most

ZDNET contributing writer Matthew Miller also tried out the Apple Watch Ultra 2 when it was released last year, and said he enjoyed the watch “for its long battery life, brighter display, expanded connectivity, and new watch bands” while also being impressed by the improved mental health functionality via the Mindfulness app.

The Ultra 2 adds more exclusive features as well, including a programmable Action Button with a variety of workout and adventuring functions (it can also simply activate the flashlight), dual-frequency GPS that can overcome interference from mountains and skyscrapers, and dual integrated speakers that are much louder for taking phone calls, playing music, or interacting with Siri. 

Many Amazon reviewers who have bought this watch say that it’s the best Apple Watch model they have ever used, calling out the watch’s quality and large 49mm screen with 3000 nits of brightness in particular. Beyond that, the Ultra offers one key addition to the series 9 lineup: an emergency siren (activated by holding down the Action Button), which belts out an 86-decibel sound pattern that can be heard up to 600 feet (180 meters) away. This can help if you get lost or take a fall on a hike, to ward off wild animals, or to scare off attackers.