Apple Watch Series 10 vs Apple Watch Ultra 2
The real choice is the kind of watch: the Apple Watch Series 10 is a smartwatch and the Apple Watch Ultra 2 is a sports watch. Beyond that, the Apple Watch Series 10 is lighter, while the Apple Watch Ultra 2 lasts longer (36 hours) and works as a dive computer.
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Key differences
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Battery life
Apple Watch Ultra 2 wins
The Apple Watch Ultra 2 lasts up to 36 hours against 18 hours.
-
GPS
Apple Watch Ultra 2 wins
The Apple Watch Ultra 2 adds multi-band GPS for more accurate tracks.
-
Display
Evenly matched
Both have LTPO OLED screens of a similar size.
-
Health
Evenly matched
Much the same health sensors.
-
Weight
Apple Watch Series 10 wins
The Apple Watch Series 10 is lighter: 36.4 g against 61.4 g.
Other differences
- Type Depends on you
They're built for different jobs: the Apple Watch Series 10 is a smartwatch and the Apple Watch Ultra 2 is a sports watch.
- Diving Apple Watch Ultra 2 wins
The Apple Watch Ultra 2 works as a dive computer (single-gas scuba); the Apple Watch Series 10 only has a depth gauge for snorkelling.
- Water rating Apple Watch Ultra 2 wins
The Apple Watch Ultra 2 is rated 10 ATM against 5 ATM, better for snorkelling and water sports.
Which one should you choose?
Choose the Apple Watch Series 10 if…
- You want apps, messages and a bright screen first: it is a full smartwatch.
- You wear it to bed or have small wrists: it weighs 36.4 g.
- You want it to slide under a sleeve: it's 9.7 mm thick.
Choose the Apple Watch Ultra 2 if…
- Training comes first: it is a sports watch built around GPS, battery and workout data.
- You hate charging: it's rated for up to 36 hours in smartwatch mode.
- You scuba or freedive: it has a proper dive mode.
- You snorkel, surf or swim in open water: it's rated 10 ATM.
Full spec comparison
The Apple Watch Ultra 2 leads on battery life and specialist modes; elsewhere the two are closely matched.
Green cells with a ✓ mark the better spec in that row. Tick "Show differences only" to hide the rows where they match.
Overview
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Brand | Apple | Apple |
| Series | Apple Watch Series | Apple Watch Ultra |
| Released | 2024 | 2024 |
| Versions | — | Natural, Black |
| Colours | Jet Black, Rose Gold, Silver, Slate, Gold, Natural | Natural, Black |
Platform & apps
They are different kinds of watch, so start with how you will use it.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Operating system | watchOS | watchOS |
| Works with | iPhone only | iPhone only |
| Minimum iOS | iOS 18 | iOS 18 |
| Chipset | S10 SiP | S9 SiP |
| Storage | 64 GB | 64 GB |
| App store | Yes | Yes |
| Subscription | — | Optional |
| Subscription name | — | Oceanic+ |
Display
The Apple Watch Ultra 2 is ahead on the display.
It has a brighter screen, and the Apple Watch Series 10 doesn't beat it on anything here.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Display type | LTPO OLED | LTPO OLED |
| Display name | LTPO3 OLED Always-On Retina display | Always-On Retina LTPO2 OLED |
| Resolution | 416 x 496 | 410 x 502 |
| Pixel density | 326 ppi | 326 ppi |
| Peak brightness | 2,000 nits | 3,000 nits |
| Colour display | Yes | Yes |
| Always-on display | Yes | Yes |
| Controls | crown, buttons | crown, action button, buttons |
Design & durability
Each watch has its strengths on size and durability.
The Apple Watch Series 10 is lighter, is slimmer and comes in 2 sizes, while the Apple Watch Ultra 2 is rated 10 ATM and has a sapphire lens.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Case sizes | 42 / 46 mm | 49 mm |
| Case shape | Rectangular | Rectangular |
| Dimensions | 46 x 39 x 9.7 mm | 49 x 44 x 12 mm |
| Thickness | 9.7 mm | 12 mm |
| Weight (case) | 36.4 g | 61.4 g |
| Case material | Aluminum | Titanium case, Grade 5 |
| Lens | Ion-X | sapphire |
| Band material | — | Alpine Loop, Trail Loop, Titanium Milanese Loop |
| Band fitting | proprietary | — |
| Fits wrists | 140-245 mm | 130-210 mm |
| Water resistance | 5 ATM | 10 ATM |
| IP rating | IP6X | IP6X |
| Water standard | ISO 22810:2010 | ISO 22810:2010 |
| MIL-STD-810 tested | — | Yes |
| Operating temperature | 0 to 35 °C | -20 to 55 °C |
| Max altitude | 3,000 m | 9,000 m |
Battery
The Apple Watch Ultra 2 is ahead on battery life.
It lasts longer (36 hours), and the Apple Watch Series 10 doesn't beat it on anything here.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Battery (smartwatch mode) | 18 hours | 36 hours |
| All battery modes | Smartwatch: 18 hours; Battery saver: 36 hours | Smartwatch: 36 hours; Battery saver: 3 days |
| Battery type | Lithium-ion | Li-ion |
| Charging | — | puck |
| Wireless charging | — | Yes |
| Fast charging | 0-80% in about 30 minutes | 0-80% in about 1 hour |
GPS & navigation
Both have built-in GPS with similar capabilities.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| GPS | Built-in | Built-in |
| Multi-band GPS | — | Yes |
| Satellite systems | GPS, GLONASS, Galileo, QZSS, BeiDou | GPS, GLONASS, Galileo, QZSS, BeiDou |
| Maps | Downloadable maps | Downloadable maps |
| Preloaded regions | U.S. national and regional parks | U.S. (national and regional parks) |
| Navigation features | waypoints, back-to-start | back-to-start, waypoints, round-trip routing, Elevation alerts |
Health & sensors
Both track much the same health data.
Heart rate, sleep and the extra sensors line up closely.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Sensors | optical HR, ECG electrode, SpO2, skin temperature, accelerometer, gyroscope, altimeter, compass, ambient light, thermometer, depth | optical HR, ECG electrode, SpO2, skin temperature, depth, thermometer, compass, altimeter, accelerometer, gyroscope, ambient light |
| Heart-rate sensor | Third-generation optical heart sensor | Third-generation optical heart sensor |
| Heart-rate tracking | 24/7 | 24/7 |
| ECG | Yes | Yes |
| Irregular rhythm alerts | Yes | Yes |
| High/low heart-rate alerts | Yes | Yes |
| Heart-rate variability | Yes | — |
| Blood oxygen (SpO2) | Yes | Yes |
| Skin temperature | Yes | Yes |
| Respiration rate | Yes | — |
| Sleep tracking | Sleep stages | Sleep stages |
| Sleep apnea alerts | Yes | Yes |
| Cycle tracking | Yes | Yes |
Safety
Both offer much the same safety features.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Emergency SOS | From the watch (LTE) | From the watch (LTE) |
| Fall detection | Yes | Yes |
| Crash detection | Yes | Yes |
| Siren | — | Yes |
Training
The Apple Watch Ultra 2 is ahead on training features.
It has more training metrics, and the Apple Watch Series 10 doesn't beat it on anything here.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Triathlon / multisport | Yes | Yes |
| Swim tracking | Pool and open water | Pool |
| Training metrics | training load | training load, heart rate zones, Functional Threshold Power, Power Zones |
| Running dynamics | Yes | Yes |
| External sensors | Bluetooth sensors | Bluetooth sensors |
Smart features
Both offer much the same smart features.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Notifications | Yes | Yes |
| Calls on the watch | Yes | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | Siri | Siri |
| Contactless payments | Yes | Yes |
| Payment service | Apple Pay | Apple Pay |
| Cellular | LTE version available | LTE version available |
| Music storage | Yes | Yes |
| Wi-Fi | — | Wi-Fi 4 (802.11n) |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| Ultra-wideband | Yes | Yes |
Diving, golf & more
The Apple Watch Ultra 2 is ahead on specialist modes.
It works as a dive computer, and the Apple Watch Series 10 doesn't beat it on anything here.
| Spec | Apple Watch Series 10 | Apple Watch Ultra 2 |
|---|---|---|
| Specialist modes | golf, ski | golf, ski |
| Diving | Depth gauge | Single-gas dive computer |
| Max dive depth | — | 40 m |
| Dive standard | — | EN 13319 |