After a massive iPhone 15 event, Apple has released the Apple Watch Series 9 in addition to the brand-new iPhone 15 selection.
However, how does it stack up against the prior generation? If you already have an Apple Watch Series 8, is an upgrade worthwhile? Or, if you were thinking about purchasing your first Apple Watch, which would be the wiser investment right now?
Specs of the Apple Watch Series 9 and Apple Watch Series 8
Apple Watch Series 9 | Apple Watch Series 8 | |
Materials | Metals: AluminumStainless | Metals: AluminumStainless |
Sizes | 41mm45mm | 41mm45mm |
Colors | Midnight, Starlight, Silver, and Product Red for aluminum
Stainless Steel: Gold, Silver, Graphite |
Aluminum: Pink, Product Red, Silver, Starlight, MidnightStainless Steel:
Graphite, silver, and gold |
Display | Retina LTPO OLED has a peak brightness of 1,000 nits. | Retina LTPO OLED always-on with 2,000 nits of peak brightness and 1 nit of lowlight |
Processor | S8 | S9 |
Double-tap gesture | Only for accessibility | Yes |
Siri | Wi-Fi or mobile data is necessary. | On-device |
Sensors | Blood oxygen sensor, electrical heart sensor, temperature sensor, and third-generation optical heart sensor | Blood oxygen sensor, electrical heart sensor, temperature sensor, and third-generation optical heart sensor |
Battery life | 18 hours | 18 hours |
Fast charging | Yes | Yes |
Ultra Wideband | U1 | Second-generation Ultra Wideband chip for the iPhone 15 with Precision Finding |
Compared between the Apple Watch Series 9 and Series 8, the design

Screen comparison of the Apple Watch Series 9 and Series 8

The highest brightness level of the Apple Watch Series 9 has increased to 2,000 nits, which is one of the significant modifications. This is comparable to the Apple Watch Ultra of the first generation, making it even more useable outside in direct sunlight. Additionally, it dims to just 1 nit in low-light conditions, preventing nighttime blindness.
If you frequently find yourself in bright, sunny environments, the Apple Watch Series 9 is the superior option overall since it outshines the Series 8 in terms of brightness levels.
CPU and software comparison between the Apple Watch Series 9 and Apple Watch Series 8

The Apple Watch Series 9’s S9 chip also enables the watch’s internal processing of all Siri commands. This implies that basic requests, like initiating a timer or starting a workout, no longer require Wi-Fi or cellular data.

Precision Finding for the iPhone 15 series is made possible by the new second-generation Ultra Wideband (UWB) processor found in the Apple Watch Series 9. Similar to AirTags, this helps you locate a missing iPhone by providing visual, tactile, and audible cues. Better HomePod and Apple Watch connection thanks to the new UWB chip lets you use Now Playing to manage HomePod media when you’re close.
Apple’s new S9 processor is significant in terms of enhancing the effectiveness and performance of the Apple Watch. The S9 gives you significantly more control over your wrist than the S8, which was a system in a package (SiP) that essentially didn’t alter from earlier iterations. If you are upgrading from an Apple Watch of an even earlier version, it is extremely worthwhile.
Battery and charging differences between the Apple Watch Series 9 and Series 8

Unfortunately, the Apple Watch Series 9 does not experience any appreciable changes in battery life or charging speed thanks to the new S9 processor. Like previously, you can anticipate a battery life of about 18 hours, and the Series 9 still supports rapid charging.
Comparison of the Apple Watch Series 9 vs Series 8 for tracking exercise and health

Both Apple Watches have ambient light sensors that allow you to track how much time you spend outside, which is fantastic for your health. You can also track your mood, which is also great for your mental health.
The ambient light sensors on both Apple Watches can be used to measure time spent in daylight, which is excellent for health, as well as your mood, both of which are great for your mental well-being.
Price and availability differences between the Apple Watch Series 9 and Series 8
Comparison between the Apple Watch Series 9 with Series 8
The Apple Watch Series 9 is significantly more useful outdoors in direct sunshine because to its max brightness of 2,000 nits, even though the appearance and display appear to remain unchanged from the previous model.
The one peculiarity of the Watch Series 9 is that the overall battery life has not been improved, even with the S9 processor. You continue to get the last 18 hours.The Watch Series 9 seems brand-new and fresh owing to the S9 processor, whereas the Apple Watch Series 8 felt a lot like the Series 7 and Series 6 before it. Oh, and that pink shade is stunning.
But is it all worthwhile?

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