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4.1
Apple Watch SE 3 Review: The Cheap Apple Watch Finally Stopped Compromising
By Jacob Chambers, Founder & Lead Reviewer · Updated 15 September 2026
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Apple spent two generations using the SE to define what a cheap Apple Watch had to go without. The SE 3 breaks that habit. It brings the always-on display down to the entry tier for the first time, runs the same S10 chip as the Series 11, charges fast, and picks up sleep score, wrist temperature sensing and sleep apnoea notifications on the way. At around £219 it is no longer the watch you settle for.
There are still lines Apple won't cross. No ECG, no blood oxygen, no depth gauge, and an 18 hour battery that a Garmin owner would find comical. Whether those matter depends on whether you want a health device or a very good wrist computer that also counts your runs.
Check the Apple Watch SE 3 price on Amazonaround £219How we review
This review is based on Apple's published UK technical specifications, its product announcements, consistent findings across independent expert testing and repeated themes in verified owner reviews. We have not run a long term test of this exact unit, so we report corroborated patterns rather than isolated opinions, and we treat manufacturer figures as claims rather than measurements.
Who it is for
This is the watch for someone in the Apple ecosystem who wants notifications, contactless payments, decent workout tracking and sleep data, and who charges their phone every night anyway. Casual runners, gym-goers and walkers are well served. So is anyone buying a first smartwatch for a teenager, given Family Setup works without the child owning an iPhone.
It's the wrong watch for a multi-day hiker, an endurance athlete who trains by heart rate variability, or anyone who specifically wants ECG readings. Our Apple Watch Ultra 3 review covers the other end of that range.
Pros
- Always-on Retina display on an SE for the first time, at 1,000 nits peak
- S10 chip means it feels as quick as the Series 11 in daily use
- Fast charging: roughly 80 percent in 45 minutes, and 15 minutes buys about eight hours
- Sleep score, wrist temperature sensing and sleep apnoea notifications, all new to the SE line
- Double tap and wrist flick gestures plus on-device Siri
- 64GB of storage, which is four times the SE 2, so music and podcasts fit offline
- Front glass rated four times more crack resistant than the SE 2
Cons
- No ECG and no blood oxygen sensor, which is the real Series 11 upsell
- 18 hours of battery means nightly charging, full stop
- Aluminium only, with no titanium or stainless option
- No depth gauge or dive-rated water resistance, so it is swim-safe but not dive-safe
- Wi-Fi is still 802.11n, a decade behind the phone it pairs with
The always-on screen changes the feel of it
Tilting your wrist to check the time sounds like a trivial annoyance until it stops. The SE 3's LTPO OLED idles at 2 nits and peaks at 1,000, so it stays legible on a bright pavement and doesn't blind you at 3am. Apple achieved this without wrecking battery life, because LTPO drops the refresh rate to 1Hz when the screen is dimmed.
The bezels haven't shrunk. Next to a Series 11 the SE 3 looks like the older design it is, and at 40mm the display is noticeably smaller than the Series line's 42mm and 46mm cases. If you have large wrists, buy the 44mm.
| Case sizes | 40 mm and 44 mm, aluminium |
|---|---|
| Display | Always-On Retina LTPO OLED, 1,000 nits peak, 2 nits minimum |
| Chip | S10 SiP, dual core, 4 core Neural Engine |
| Storage | 64 GB |
| Battery | Up to 18 hours typical, 32 hours in Low Power Mode |
| Charging | Approx 80 percent in 45 minutes; 15 minutes gives about 8 hours |
| Water resistance | 50 m, swim rated, not dive rated |
| Health sensors | 2nd gen optical heart sensor, wrist temperature; no ECG, no blood oxygen |
| Connectivity | Wi-Fi 802.11n, Bluetooth 5.3, GPS, optional 5G cellular |
| Durability | Ion-X front glass, 4x more crack resistant than SE 2 |
Sleep is where the real upgrade sits
The SE 3 gets sleep score, which folds duration, bedtime consistency, how often you wake and time in each sleep stage into a single number you can actually act on (Apple's announcement describes how the score is built). A single number is reductive by design; its value is that you'll glance at it every morning, whereas nobody reads a hypnogram daily.
Sleep apnoea notifications are the more consequential feature. The watch tracks breathing disturbances over 30 nights and flags a pattern consistent with moderate to severe apnoea. Given how many cases go undiagnosed, a wrist-worn nudge towards a GP has obvious value, though the NHS is clear that confirming it needs a proper sleep study (NHS guidance on sleep apnoea). Don't expect the watch to replace that, and don't ignore a flag either.
Wrist temperature sensing arrives too, feeding retrospective ovulation estimates for cycle tracking.
Training with it
For gym sessions, park runs and spin classes, the SE 3 is more than enough watch. Built-in GPS handles route tracking, the Workout app covers the sports most people do, and heart rate zones, pace alerts and custom workouts are all there. Apple Fitness integration is the strongest ecosystem play in the category.
The optical heart sensor is second generation, meaning good for steady efforts and imprecise on short hard intervals like every wrist sensor ever made. Independent reviewers have argued the validation studies behind these devices tend to test under conditions that flatter them (methodological shortcomings of wrist-worn heart rate monitor validations), so if you train by zones, pair a chest strap. Ours are covered in the heart rate monitor guide.
Battery remains the hard ceiling. Eighteen hours means a long Sunday run and a full day of notifications leaves you hunting for the puck by evening. Fast charging genuinely helps here: 15 minutes while you shower is worth about eight hours. Compare that with the Garmin Forerunner 70, which runs for close to a fortnight, and you can see what Apple traded away for the screen and the app platform.
See today's Apple Watch SE 3 priceRecommended reads
Frequently asked questions
Is the Apple Watch SE 3 worth it over the SE 2?
Yes, and it is not close. The SE 3 adds an always-on display, the much faster S10 chip, fast charging, a wrist temperature sensor, sleep score and sleep apnoea notifications. Those are the features people actually complained about missing. If you own an SE 2 and none of that moves you, keep it another year.
Does the Apple Watch SE 3 have ECG or blood oxygen?
No to both. Apple keeps the ECG electrode and the blood oxygen sensor for the Series and Ultra lines, and that is the clearest gap between the SE 3 and a Series 11. It does have a wrist temperature sensor, which the SE 2 lacked.
How long does the Apple Watch SE 3 battery last?
Apple rates it at 18 hours of typical use, or 32 hours in Low Power Mode. In practice that means charging daily, usually while you shower or make dinner. Fast charging softens the blow: 15 minutes on the puck adds around eight hours, and 45 minutes takes you to roughly 80 percent.
Can the Apple Watch SE 3 track sleep apnoea?
It can flag possible signs of it. The watch looks for breathing disturbances during sleep over a 30 day window and notifies you if the pattern suggests moderate to severe sleep apnoea. That is a prompt to see a GP, not a diagnosis, and diagnosis requires a proper sleep study.
Is the SE 3 good enough for running?
For 5K to half marathon training, yes. It has built-in GPS, the full Workout app, heart rate zones, pace alerts and the Apple Fitness ecosystem behind it. The problem is battery: a long run plus a normal day will have you charging by evening, and there is no multi-day option like a Garmin or Coros.
SE 3 or Series 11?
The Series 11 gets a bigger, brighter always-on screen, ECG, blood oxygen, faster charging still and a more durable case, for roughly £180 more. If you want health sensors, pay it. If you want notifications, workouts, sleep tracking and Apple Pay on your wrist, the SE 3 does all of that for £219 and the money is better spent elsewhere.
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