Commentary: The Series 10 and Ultra 2 are incredibly similar making it hard to know which one to buy. Here's everything you need to know about screens, design, battery and health tracking between Apple's latest watches.

The Apple Watch Series 9 is currently available on Amazon for $358, a mega saving of 24% on the list price. It’s one of many bargains in Amazon’s Prime Big Deal Days, which runs across Oct. 8 and 9.

The best October Prime Day 2024 smartwatch deals include savings on the new Apple Watch Series 10, the Series 9, Garmins, and more top options.

Another way in which the Series 10 beats the Ultra is charging time, and this is something that's worth expanding on. Apple says that the Series 10 can charge from 0 to 80 percent in just 30 minutes (as opposed to older models which achieve the same feat in 45 minutes, whereas the Ultra models get there in an hour).

The Apple Watch Series 10 improves on our favorite smartwatch with a bigger screen and new sleep health tracking, though not everyone needs to rush out and upgrade.

We recently wrote about potential improvements to iPhone repairability, and it stirred hope that the Apple Watch Series 10 might also see some of those improvements. Traditionally, the Apple Watch has been a bit problematic when it comes to repair. Sadly, the Series 10 is no different.

Choosing between the Apple Watch Series 10 and Ultra 2 comes down to size and price. But the Ultra 2 does have some hidden extra features that runners especially will want to know about.