Apple Watch Series 10 vs. Apple Watch Series 9: Should you upgrade to the latest model?

It's the tenth anniversary of the Apple Watch Series, and to celebrate its decade on the market, Apple is giving the Series 10 a new look. The Series 10 gets a larger screen size and thinner build, a new sleep apnea detection feature, and a new finish, Apple announced on Monday at its annual hardware event in Cupertino. 

Alongside the updated Apple Watches, which also include a new shade of the Apple Watch Ultra 2, the tech giant announced its iPhone 16 lineup and two new models of AirPods. 

Also: Preordering an Apple Watch Series 10? Consider these three features before you upgrade

Whether you're considering switching from your Series 9 watch to a brand new Series 10 (that you can preorder today) or deliberating between the two options, we've weighed the pros and cons of each watch to help you make the best decision. 

Specifications

You should buy the Apple Watch Series 10 if… 

1. You want an improved display and a lighter build

If the Apple Watch Series 9's display is too small to navigate and type on, causing you to often fumble and input the wrong passcode or messages, you might want the Series 10 over the Series 9 for its larger screen area. 

You're getting a larger screen and a thinner watch case with the Series 10, which also means you're getting a larger surface to work with. The Series 10 has a 9% more active screen area than the Series 9, according to Apple. Series 9 has screen specs of 41mm and 45mm respectively, while the Series 10 specs are 42mm and 46mm. 

Also: Here's which Apple Watch models will get WatchOS 11 

The Series 10 is also 10% thinner and lighter than the Series 9, according to the press release. Apple says these changes mean the Series 10 is better from a comfort and convenience perspective for sleep tracking. 

Additionally, the Series 10 gets a wide-angle OLED display, the first of its kind in the smartwatch lineup, offering a 40% brighter viewing angle compared to the Series 9. 

2. You want to track for potential sleep apnea

Building on the Apple Watch's suite of sleep-tracking capabilities, the Series 10 will include a new sleep apnea feature people can use to monitor their condition. The feature works through the watch's accelerometer, which monitors movements associated with respiratory pattern interruptions and is tracked by Apple's new Breathing Disturbances metric. You can view these details in the Health app over a one-month, six-month, or one-year period. Users will be notified if their sleep history shows patterns of apnea. Apple says the feature will be FDA-authorized soon, according to the release. 

Also: Here's one big reason I'm sticking with my Apple Watch Series 7 and forgoing the Series 10

If you primarily wear an Apple Watch or other wearable device to keep an eye on your sleep apnea or other medical conditions, the Apple Watch Series 10 should suit you better than the Series 9.

3. The new finishes speak to you

The Series 10 offers up a new jet black finish. Apple says the finish offers a "distinctively glossy, reflective shine", thanks to polished nanoparticles and a 30-step finishing process. Alongside jet black, the Series 10 comes in an updated rose gold and brushed silver aluminum. You can also get the Series 10 in an aerospace-grade polished titanium, which is lighter than the stainless steel build of the Series 9. Titanium cases come in natural, gold, and slate. 

You should buy the Apple Watch Series 9 if…

1. You want a cheaper Apple Watch

Once the Series 10, which retails for $399, hits the market, the Series 9 should reduce in price substantially. Right now on Amazon, for example, you can get the Series 9 for $100 cheaper than the latest generation. This makes it a great time to buy an Apple Watch if you want the tech to learn more about your daily activity levels or have your smartphone's assistant around your wrist but don't necessarily care about the latest features.

2. You don't care about the new Apple Watch water features

The Apple Watch Series 10 features a new depth gauge, which measures up to six meters beneath the water's surface, and a water temperature sensor. While these features will benefit swimmers, surfers, and snorkelers, not everyone will use them, especially those who remove their watches before heading into a pool or body of water.