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The Apple Watch Ultra 2 and Series 9 are the latest additions to the company’s smartwatch lineup. While there is a huge price gap between the two devices in terms of the standard models, they do in fact share some surprising similarities.
So, if you are wondering whether to fork out for an Ultra 2 or maybe save a little on an S9 instead, this guide is here to help.
Without further ado, let’s dive into the features, design, and performance of these two Apple watches.
Apple Watch Ultra 2 or S9: At a Glance
To help you make a more informed decision, let’s take a quick look at the key differences between the Series 9 and Apple Watch Ultra 2:
| Feature | Apple Watch Ultra 2 | Apple Watch Series 9 |
| Case Size | 49mm | 41mm or 45mm |
| Case Material | Titanium | Aluminum or Stainless Steel |
| Display | Always-On Retina LTPO OLED, up to 3000 nits | Always-On Retina LTPO OLED, up to 2000 nits |
| Water Resistance | 100 meters | 50 meters |
| Depth Rating | Recreational dive to 40 meters | – |
| Siren | Yes | No |
| Action Button | Customizable | – |
| Cellular Connectivity | Standard | Optional |
| Battery Life | Up to 36 hours (72 hours in Low Power Mode) | Up to 18 hours (36 hours in Low Power Mode) |
Now for the more detailed comparison…
Design and Display
When it comes to the physical appearance, the Apple Watch Ultra 2 and Series 9 take vastly different approaches.

The Ultra 2 boasts a bold, rugged design with a 49mm titanium case, flat sapphire crystal display, and a prominent Action button that adds an extra layer of functionality.
This watch is built to withstand the elements, with a water resistance rating of 100 meters and a MIL-STD 810H certification for durability, a huge plus for the model.

In contrast, the Series 9 offers a more streamlined aesthetic, available in 41mm or 45mm aluminum or stainless steel cases. Its water resistance isn’t as high as the Ultra 2, but It can withstand 50 meters in water, making it suitable for swimming in a pool.
Its Always-On Retina display has up to 2000 nits of brightness for visibility in direct sunlight.

While the Series 9 may not be as overtly adventurous as the Ultra 2, its sleek design and versatility make it a compelling choice for those who prefer a more understated look. Plus it comes in two sizes, unlike the Ultra 2.
Performance and Efficiency
Under the hood, both the Apple Watch Ultra 2 and Series 9 are powered by the same S9 system-in-package (SiP).
However, the Ultra 2 takes things a step further with its dual-frequency GPS, providing improved accuracy for outdoor activities.
But the real standout feature when it comes to performance is the battery life. The Ultra 2 offers up to 36 hours of regular use and an impressive 72 hours in Low Power Mode.

In contrast, the Series 9 delivers a respectable 18 hours of battery life, which should be more than enough for most users’ daily needs.
However, if you’re an endurance athlete or someone who spends a lot of time away from power sources, the Ultra 2’s exceptional battery life could be a game-changer.
Health and Wellness Tracking
Both the Apple Watch Series 9 and Ultra 2 are packed with advanced health and wellness features.
The S9 and Ultra 2 watches feature a temperature sensor, electrical heart sensor, and third-generation optical heart sensor, allowing you to monitor your heart rate, detect irregular rhythms, and even take an ECG right from your wrist.

Where the Ultra 2 shines, however, is in its features for outdoor enthusiasts and adventurers. The watch boasts a depth gauge, water temperature sensor, and even a siren that can be heard up to 600 feet away, making it an invaluable companion for activities like diving, hiking, and exploring the great outdoors.

The Series 9, while still a highly capable fitness tracker, may be better suited for those with a more urban or indoor-focused lifestyle.

Safety and Emergency Features
Both the Apple Watch Ultra 2 and Series 9 excel in safety and emergency preparedness.
They offer International emergency calling, Emergency SOS, Crash Detection, and Fall Detection, ensuring that you can quickly summon help in the event of an emergency.
The Ultra 2, however, takes things a little bit further with its Siren feature.

This loud, audible alarm can be activated to attract attention and deter potential threats, providing an extra layer of security for those venturing into more remote or isolated areas. Additionally, the Ultra 2’s water resistance rating of 100 meters and its compatibility with the Oceanic+ app for recreational diving make it a standout choice for water-based activities.
Customization and Connectivity
One of the key differences between the Apple Watch Ultra 2 and Series 9 lies in their customization options and connectivity features.
The Ultra 2 boasts an Action button that can be programmed to perform a wide variety of tasks, from launching workouts to triggering custom shortcuts.

In terms of connectivity, the Ultra 2 comes with cellular connectivity as standard, meaning you can leave your iPhone at home and still stay connected, make calls, and stream music.
The Series 9, on the other hand, requires you to purchase the cellular-enabled model to enjoy these same features, adding an extra cost to the overall investment.

Price
Price is undoubtedly going to be a big factor when deciding which watch is right for you.
The starting price for the Apple Watch Ultra 2 is £799/ $799 from the Apple website and from Amazon here or BestBuy here.
The starting price for the Apple Watch Series 9 is £399/ $399 and £699/ $699 for cellular. Or £394 from Amazon herehttps://geni.us/10SdSs and with cellular for £524 here. https://geni.us/PEKjr.
You can also get the S9 from BestBuy for $399 here https://howl.me/cmzUcIJBYNR or cellular for $529 here https://howl.me/cmzUdXaoToT.
Should you buy the Apple Watch Ultra 2 or Series 9?
Ultimately, the decision between the Apple Watch Ultra 2 and Series 9 comes down to your individual needs and lifestyle.
If you’re an adventurous outdoor enthusiast who values rugged durability, exceptional battery life, and specialized features like the Siren and Depth app, the Ultra 2 is likely the better choice.

Its customizable Action button and cellular connectivity also make it a more versatile and independent smartwatch experience.
On the other hand, if you’re looking for a sleek, sophisticated, and highly capable smartwatch that still offers robust health and safety features, the Series 9 may be the better fit.

Its streamlined design, Always-On Retina display, and slightly more affordable price point make it an appealing option for those who prioritize everyday wearability and style.
But if you are after the cellular option, the £100/ $100 difference makes the Ultra 2 more appealing over the S9 due to the additional features.
Ultimately, both the Apple Watch Ultra 2 and Series 9 are exceptional smartwatches.
Images courtesy of Apple.