Apple’s annual Watch launch is about as surprising as rain at Glastonbury, and the latest Series 12 sticks to the script, keeping the same design as its predecessor (and the one before). Put it next to last year’s Series 11, and you’d need a magnifying glass, a spec sheet and maybe even a forensic accountant to tell them apart.
But look past the familiar squircle, and things get a little more interesting. The Series 12 introduces a new Health Sensing System, a Readiness app, Audio Intelligence and a fresh S11 processor that delivers more than a speed bump. Meanwhile, Apple has moved the Series 11 off its shelves and into the discount aisle, but depending on what you want from your smartwatch, it might be the better buy. Here’s what’s new with the Apple Watch Series 12 compared with the Series 11 in terms of price, design, features and battery life.
Related: Apple Watch Series 12 vs Watch Ultra 4: I’ve tested both but the one you should buy depends on who you are
Price and release date
The Apple Watch Series 12 went on sale on 18 September 2026, starting at $369/£369 for the 42mm aluminium GPS model and $419/£419 for the 46mm. For the eagle-eyed among you, you’ll know that’s the same as the Series 11’s price, so while iPhones, iPads and MacBooks have been stung with price increases, the Apple Watch was, thankfully, spared.
Cellular connectivity on the Series 12 adds $100/£100. Titanium starts at $649/£649, and the returning ceramic finish, last seen on the Series 5, tops out at $849/£849 if you’re feeling particularly fancy.
The good news is that with the Series 12 now available, the Series 11 will be cheaper if you can find it. The catch is that Apple no longer sells the Series 11, so you’ll need to look at third-party retailers, where discounts tend to appear during sales periods like Black Friday.
Design and build
Side by side, the Apple Watch Series 12 and Series 11 are the sort of twins only their mum could tell apart – certainly at first glance. Both come in 42mm and 46mm sizes, are 9.7mm thick in aluminium and titanium, and use the same LTPO3 wide-angle OLED display, peaking at 2,000 nits and dimming to 1 nit.
The Series 12 is a touch heavier, with the 46mm aluminium GPS model weighing 39.5g, compared with 37.8g. But given that’s about the same as a couple of paperclips, you’re very unlikely to notice. The Ceramic model is quite a bit heavier at 52.9g, but if you’re picking that model, you’re buying it for how it looks, not for how lightweight it is.
Flip the Watch Series 12 and Series 11 over, and you’ll see a difference in the sensor array. You won’t even have to look that hard to spot it – more on that in a second. Elsewhere, the Aluminium Series 12 models get Ceramic Shield 2, and while you can’t necessarily see that difference, Apple says it is 60 per cent tougher than the Series 11’s Ion-X glass, which is good news for anyone who has daily run-ins with door frames. Titanium and ceramic models get sapphire crystal, as the Series 11 titanium model did, and both the Series 11 and Series 12 have 50-metre water resistance, a 6-metre depth gauge and IP6X dust resistance.
Apple has shaken up the paint pots for the Series 12. The aluminium model now comes in Dark Bronze, Light Gold, Black and Space Grey, while the Series 11 offered Jet Black, Rose Gold, Silver and Space Grey – making Space Grey the only finish to survive the cull. The titanium model swaps the Series 11’s Slate, Gold and Natural for Radiant Gold and Natural, and the new ceramic models arrive in Pearl White or Night Blue. Both generations also get Hermès editions for anyone who thinks a watch strap should cost more than a weekend in Paris. The Series 11 Hermès edition will be hard to find now, but if you’re spending this much, you really ought to buy the latest model anyway.
Features
This is where the main differences between the Apple Watch Series 12 and Series 11 lie. The Series 12’s S11 chip replaces the Series 11’s S10 chip (which was the same as the Series 10’s), and the new Health Sensing System adds high-frequency background heart rate tracking and Recovery HRV, neither of which the Series 11 offers. Both the high-frequency background heart rate data and Recovery HRV feed the Readiness app, which tells you whether to train hard or stay on the sofa.
The Series 12 also gets Audio Intelligence, a four-part bundle the Series 11 lacks entirely. Sound Recognition will notify you on your wrist when it hears sirens, alarms, doorbells or a crying baby, even without your iPhone nearby. Music Recognition Shazams whatever’s playing in the background and drops the title and artist into the Smart Stack so you’ll know the song without having to open the Shazam app separately.
Live Rewind and Siri Recap are the main new additions, though they aren’t available yet, with both arriving in beta later this year. When they do arrive, you’ll be able to double-press the Digital Crown and Live Rewind will show the last 15 seconds of conversation as text, so you can find out what your partner said while you were checking the football scores. Siri Recap, meanwhile, goes further, summarising longer conversations, such as a doctor’s appointment or a parent’s evening, so you don’t have to scribble notes while trying to pay attention. Apple says no audio recordings are kept, and Live Rewind chimes audibly – even on silent – so everyone nearby knows the watch is listening. Live Rewind and Siri Recap will also be switched off by default, so you’ll need to opt in.
Both watches run watchOS 27, which landed on 14 September and brings Siri AI – Apple’s redesigned, chattier and more contextually aware assistant – to your wrist in beta, in English first and not in the EU at launch. It also adds a dynamic app grid with Siri-suggested apps and perimenopause and menopause support in Cycle Tracking. The software also adds a single-tap gesture alongside the double tap, so it’s easier to use either watch one-handed.
Elsewhere, both the Series 12 and Series 11 offer ECG, hypertension and irregular rhythm notifications, Blood Oxygen, sleep apnoea alerts, sleep score, wrist temperature, women’s health tools, Precision Finding, and Fall and Crash Detection, all shared across the two models, so the Series 11 is hardly a fossil.
Battery life
If you were hoping for a two-day watch with the Series 12, look away now. While the Ultra 4 received a battery upgrade over the Ultra 3 this year, the Series 12 didn’t. Instead, both the Series 12 and Series 11 are rated for 24 hours, or 38 in Low Power Mode, so daily charging remains part of the routine.
That said, the Series 12 offers 10 hours of workout tracking, and you’ll also get a few more hours of use from a 15-minute charge. Both smartwatches reach 80 per cent in about 30 minutes, but a 15-minute top-up delivers 12 hours of use on the Series 12 versus eight on the Series 11. Five minutes will also give you around 10 hours of sleep tracking on the Series 12 (who on earth is sleeping for 10 hours, though), compared with eight on the Series 11.
Apple Watch Series 12 vs Series 11: which should you choose?
If you’re buying new and want Apple’s latest health tracking and features, the Series 12 is the one to buy. Readiness scores, Audio Intelligence, a tougher screen and faster battery top-ups make it the better watch, and the new processor should hopefully future-proof you for a few years too.
If you can find a discounted Series 11, it offers the same screen, battery, design and many of the same smarts, so it would be a great buy if the price is right. Already own a Series 11? Keep it – unless the thought of a Readiness score is keeping you up at night, which, ironically, would destroy your sleep score and give you a bad Readiness score anyway.
Read more: Apple’s Readiness score explained: what it is, how to get it and why it’s so stingy
