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Three models, a €630 price difference, and a decision that hardly anyone makes based on price alone. The difference between the cheapest and most expensive Apple Watch isn't just money, but an entire generation of chips. Those who understand the reasons behind this difference either save themselves the extra cost – or consciously choose to pay it.
Apple has been selling the Apple Watch in three tiers for years: an entry-level model, a standard model, and an outdoor version. Since its unveiling on September 9, 2026, they have been called the Apple Watch SE 3, Apple Watch Series 12, and Apple Watch Ultra 4. All three are already available for pre-order and will be released on September 18. Prices start at €269, €449, and €899, respectively, and there are more significant differences between these three models than the product names might suggest. The technical specifications are taken from the German datasheets for the Apple Watch Series 12, the Apple Watch SE 3, and the Apple Watch Ultra 4. One question applies to all three models and should be clarified before choosing a model: The differences between GPS and cellular connectivity affect each tier and are reflected in the price of all three.
Key Facts at a Glance
- The SE 3 continues to use the S10 chip from last year, while the Series 12 and Ultra 4 have the S11 and the new health detection system.
- The SE 3 completely lacks ECG, blood oxygen, and high blood pressure monitoring – however, it does have sleep apnea monitoring and a sleep index.
- Satellite connectivity and depth gauge up to 40 meters remain exclusive to the Ultra 4; in this country, only the SOS emergency call function is activated.
- The 44mm SE has a larger display area of 977mm² than the 42mm Series 12 with 970mm² – but the case size alone doesn't tell the whole story.
- Within the Series 12, the upgrade from an aluminum to a ceramic case costs more than a complete SE 3.
A direct comparison of the three models
| Feature | Apple Watch SE 3 | Apple Watch Series 12 | Apple Watch Ultra 4 |
|---|---|---|---|
| Price from | 269 euros | 449 euros | 899 euros |
| Case sizes | 40 and 44 mm | 42 and 46 mm | 49 mm |
| Material | Aluminum | Aluminum, titanium, ceramic | Titanium |
| Chip | S10 | S11 | S11 |
| Front glass | Ion-X | Ceramic Shield 2 (aluminium), sapphire (titanium, ceramic) | sapphire |
| Peak brightness | 1,000 nits | 2,000 nits | 3,000 nits |
| Display area | 759 / 977 mm² | 970 / 1,196 mm² | 1,245 mm² |
| ECG app | – | Yes | Yes |
| Blood oxygen | – | Yes | Yes |
| Hypertension notifications | – | Yes | Yes |
| Sleep apnea messages | Yes | Yes | Yes |
| Water protection | 50 m | 50 m | 100 m |
| Depth gauge | – | 6 m | 40 m |
| GPS | L1 | precise L1 | Dual frequency |
| Satellite | – | – | Emergency SOS call, “Where is?” |
| Battery | 18 hours, 32 hours in economy mode | 24 hours, 38 hours in economy mode | 50 hours, 84 in economy mode |
| Outdoor training | 7 hours. | 10 hours. | 18 hours |
| 0 to 80 percent | approximately 45 minutes. | approximately 30 minutes. | approximately 45 minutes. |
Apple Watch SE 3: Entry-level with last year's technology
The SE 3 is the only one of the three models not released this fall. It continues to run on the S10 chip and the second-generation optical heart sensor – the same technology used in the Series 11. Apple has kept it in its lineup and maintained the price at €269.
For this price, you get more than the positioning suggests: always-on display, sleep apnea alerts, sleep score, wrist-based temperature monitoring, accidental fall detection, and 5G in the cellular models. What's missing, Apple unusually clearly states in its own model comparison: no ECG app, no blood oxygen app, no high blood pressure alerts, no depth gauge, and no water temperature sensor.
The display remains at 1,000 nits – half that of the Series 12. In direct sunlight, this is the most noticeable difference in everyday use, more so than any figure in the specifications. The SE 3 also lags behind when it comes to charging: around 45 minutes to 80 percent compared to 30 minutes for the Series 12.
Apple Watch Series 12: Here's where the health features make the difference
The Series 12 introduces the new health monitoring system. The third-generation electrical heart sensor, the always-on optical sensor, and the S11 chip work together to provide significantly more frequent measurements: Heart rate is tracked in the background throughout the day, and heart rate variability, according to Apple, is measured up to 24 times more frequently than before. This results in the new daily fitness score, ranging from 0 to 10.
More practically relevant are the three features missing from the SE 3: the ECG app, the blood oxygen app, and high blood pressure alerts. Anyone wanting to monitor any of these three will need the Series 12 – Apple has described how the warnings for abnormal readings work in its explanation of Apple Watch's high blood pressure alerts.
In addition, it offers improved durability: Ceramic Shield 2 on the aluminum cases, sapphire crystal on titanium and ceramic cases, 2,000 nits peak brightness, a depth gauge down to 6 meters, and snorkeling certification. The battery lasts 24 hours instead of 18, and 10 hours during outdoor training instead of 7. For a detailed comparison of the Series 12 and Series 11, see the Series 12 vs. Series 11 comparison.
Apple Watch Ultra 4: Endurance, Depth and Satellite
The Ultra 4 shares the S11 chip and health system with the Series 12. Its €450 price premium is focused on three areas: battery life, robustness, and connectivity.
The biggest difference is in battery life. 50 hours in normal use compared to 24, and 84 hours in power-saving mode compared to 38. In extended training mode, 25 hours are possible with full GPS tracking, and in the maximum extended mode, up to 45 hours – but then in power-saving mode, without notifications or split times.
The models differ in terms of robustness, specifically their water resistance: 100 meters instead of 50, recreational diving up to 40 meters according to EN13319, depth gauge up to 40 meters, plus MIL-STD 810H certification and a siren. Only the Ultra 4 features dual-frequency GPS.
The third point has the greatest regional limitation. Emergency SOS and "Where is?" via satellite are free for two years after activation of an Ultra 3 or newer model – however, in this country, only Emergency SOS is activated by the satellite services. Which functions are available in which countries is constantly changing; the current situation can be found in the overview of the Satellite functions and their markets. Those coming from an Ultra 3 will find the differences in detail in the comparison. Ultra 4 vs. Ultra 3.
What the surcharges within the Series 12 cost
The €449 price is for the 42mm aluminum case with GPS. Prices quickly rise from there, and the price range is more informative than the starting price:
| Execution | GPS | GPS + Cellular |
|---|---|---|
| Aluminium 42 mm | 449 euros | 569 euros |
| Aluminium 46 mm | 499 euros | 619 euros |
| Titanium | 799 euros | 849 euros |
| Ceramics | 1,049 euros | 1,099 euros |
Two things stand out. Titanium and ceramic are only available with cellular connectivity, as is the entire Ultra series – so with these models, the choice between GPS and cellular is essentially a non-issue. And the upgrade from aluminum to ceramic costs 600 euros, more than a complete SE 3 with cellular.
Incidentally, the cellular version of the aluminum model is lighter: 31.5 grams compared to 32.2 grams for the 42mm case and 38.6 grams compared to 39.5 grams for the 46mm. With the SE 3, it's the other way around; the cellular version weighs 0.1 grams more.
The case size says little about the display area
Those who sort by numbers can easily end up with the wrong model. The 44mm SE-3 has a 977mm² display area, while the 42mm Series 12 only has 970mm². The smaller and more expensive model therefore offers practically the same screen area as the larger and cheaper one – but with less weight and a significantly brighter display.
The difference is clearer at the top end: 1,196 mm² for the 46 mm Series 12, 1,245 mm² for the Ultra 4. The difference between the largest Series and the Ultra is therefore only around four percent of the surface area, while the Ultra, at 63 grams, weighs almost twice as much as the 46 mm aluminum frame.
The models also differ in their wristbands: The smaller cases are designed for wrist circumferences of 130 to 200 millimeters, the larger ones for 140 to 245, and the Ultra 4 for 130 to 210.
Which model is worthwhile for whom?
The SE 3 is suitable for anyone who is satisfied with notifications, activity rings, sleep tracking, and security features. It's also the obvious choice as a first Apple Watch for children, because "Apple Watch for your children" only requires a cellular model, not a specific series.
The Series 12 is the choice if heart health is a concern. ECG, blood oxygen, and blood pressure alerts are not retrofittable, and these are precisely the three areas where a watch ages the fastest. If you're considering whether the €180 price difference is worth it, consider which of these measurements you would actually use – the detailed calculation is in the Series 12 vs. SE 3 comparison.
The Ultra 4's battery life is its real advantage. For those planning multi-day trips, diving excursions, or simply not wanting to charge their watch every night, this is the only model that can last through a weekend without needing a charge. It's overkill for everyday office use – a direct comparison can be found in the Series 12 vs. Ultra 4 comparison.
Price is not the real dividing line
The three tiers read like a price ladder, but the real dividing line lies elsewhere: between the S10 and S11. Everything that defines the new health system depends on the newer chip, and the SE 3 doesn't have it. This isn't a limitation that can be resolved with software, and it's more likely to become more pronounced than less over the watch's lifespan.
In practical terms, this means that the price difference between the SE 3 and the Series 12 is the only one of the two upgrades that buys new measurement capabilities. The price difference between the Series 12 and the Ultra 4 buys more battery life, greater robustness, and satellite connectivity – features that are either needed or not. Therefore, the first upgrade is the more difficult decision for most users, even though it only costs €180, while the second costs €450.
If you're buying today and plan to wear the watch for four or five years, the Series 12 offers the most predictable return on investment. If you're buying it as a secondary device or for a clearly defined purpose, the SE 3 is a good choice – and you'll save money that can be spent on a better strap or charger. Which of these three watches is currently on your shortlist, and what's holding you back – the price or a specific feature? Share your reasoning in the comments.
Frequently Asked Questions: Apple Watch Buying Guide
The Apple Watch SE 3, starting at €269, covers everything you need for everyday life: notifications, activity rings, sleep tracking including sleep score and sleep apnea alerts, fall and accidental detection, and an always-on display. However, it lacks heart health measurements and the brighter display of the Series 12.
No. Apple explicitly lists the ECG app for the Series 4 and newer models, as well as all Ultra models, but excludes the SE series. The Blood Oxygen app and Blood Pressure Notifications are also missing from the SE 3. Anyone needing any of these three measurements will have to get a Series 12 or an Ultra 4 – they cannot be added later.
Not in the sense of a measurement with a numerical value. The Series 12 and Ultra 4 analyze the data from the optical sensor and report potential signs of high blood pressure over a longer period. No Apple Watch displays a blood pressure reading in mmHg. Apple also excludes this feature for people under 22, pregnant women, and those with a pre-existing diagnosis of hypertension.
It's worthwhile for anyone who regularly uses the watch without an iPhone – for sports, on the go, or around the house. For the aluminum Series 12 model, cellular connectivity costs an additional €120. With titanium and ceramic models, as well as the entire Ultra series, the question doesn't arise: these versions are only available with cellular connectivity. The ongoing costs depend on the provider and vary considerably.
The Ultra 4 offers up to 50 hours of battery life with normal use and 84 hours in power-saving mode. For comparison, the Series 12 achieves 24 and 38 hours respectively, and the SE 3 18 and 32 hours. During outdoor training, the battery life is 18, 10, and 7 hours. The Series 12 charges the fastest – around 30 minutes to 80 percent, compared to around 45 minutes for the other two.
Only the Ultra 4. It's water-resistant to 100 meters according to ISO 22810:2010 and certified for recreational diving to 40 meters according to EN13319; the depth gauge also has a range of 40 meters. The Series 12 and SE 3 are water-resistant to 50 meters and therefore suitable for swimming. Apple also approves snorkeling to 6 meters for the Series 12, but not for the SE 3.
The Series 12, Ultra 4, and SE 3 require an iPhone 11 or later with iOS 27, including the iPhone SE from the second generation onward. An Android smartphone will not work – the Apple Watch can only be paired with an iPhone.
