Smartwatches / Compare
Apple Watch Series 11 vs Apple Watch Ultra 3
Product A: Apple
88 of 150 known
Change Apple Watch Series 11
Product B: Apple
100 of 150 known
Change Apple Watch Ultra 3
45 of 141 fields differ
- 27 different values
- 18 known for one only
- 52 the same
- 44 missing for both
Biggest differences
Each bar uses the scale of all 101 smartwatches.
- Water resistanceA: 5ATMB: 10ATMWatch Ultra 3 is 5 ATM higher.
- Battery lifeA: 24hB: 42hWatch Ultra 3 is 18 h higher.
- Peak brightnessA: 2,000nitsB: 3,000nitsWatch Ultra 3 is 1,000 nits higher.
Size, drawn to scale
Front and side.
- AWatch Series 11: 36 × 42 mm
- BWatch Ultra 3: 44 × 49 mm
Weight
0 to 80 g
Weight (case only)
A30.3g
B61.6g
All 150 fields
Every value links to where we found it.


General
4 of 10 differ
Series
Apple Watch Ultra2Maker product pagesupport.apple.com/en-us/108056Read 5 October 2026
Model numbers
GTIN / EAN
Not available
Not available
Announced
Status
Not available
Not available
Predecessor
Apple Watch Series 1016Press article9to5mac.com/2025/09/09/apple-unveils-new-apple-watch-series-11Read 23 October 20269to5Mac says the new Apple Watch Series 11 is very similar to last year's Apple Watch Series 10.17Reviewtomsguide.com/wellness/smartwatches/apple-watch-11-announcedRead 23 October 2026Tom's Guide sets the new Apple Watch Series 11 apart from last year's Apple Watch Series 10.
Successor
Apple Watch Series 1218Reviewtomsguide.com/wellness/smartwatches/apple-watch-series-12-announced-everything-you-need-to-know-about-the-new-flagship-apple-watchRead 23 October 2026Tom's Guide calls the Series 11 last year's model and asks if the new Apple Watch Series 12 will take its place.19Press articlemacrumors.com/guide/apple-watch-series-11-vs-12Read 23 October 2026MacRumors says the Series 12 brings many changes over its predecessor, the Series 11, which Apple has discontinued.
Apple Watch Ultra 426Reviewtechradar.com/health-fitness/smartwatches/apple-watch-ultra-4-vs-apple-watch-ultra-3-whats-changed-and-should-you-upgradeRead 23 October 2026TechRadar calls the Apple Watch Ultra 3 the previous gen of the Apple Watch Ultra 4.27Press articlemacrumors.com/2026/09/16/apple-watch-ultra-3-vs-ultra-4Read 23 October 2026MacRumors says the Apple Watch Ultra 4 improves on its predecessor and notes the Ultra 3 launched last year.
Launch price (US)
Launch price (EU)
Markets
Not available
Not available
Colours
Rose Gold, Silver, Space Gray, Jet Black, Gold, Natural, Slate1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
Segment
Not available
Not available
OS updates promised
Not available
Not available
Security updates until
Not available
Not available
Case
6 of 8 differ
Case size
Case shape
Not available
Not available
Case material
Case material (as published)
Titanium case, Grade 51Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Case dimensions
Height42Width36Thickness9.7mm(1.7 × 1.4 × 0.4 in)1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026Size and Weight. Base is 42 mm aluminum GPS. Other dimensions belong in variants.
Height49Width44Thickness12mm(1.9 × 1.7 × 0.5 in)1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026Size and Weight. Base is 49 mm natural titanium.
Weight (case only)
Weight with strap
Not available
Not available
Durability
5 of 8 differ
Water resistance
Water resistance standard
Dust and water rating
MIL-STD-810
Not available
MIL-STD-810 tests
Not available
Altitude, High temperature, Low temperature, Temperature shock, Immersion, Freeze with thaw, Ice and freezing rain, Shock and vibration1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Operating temperature
Display
6 of 14 differ
Display type
Display type (as published)
Always-On Retina display with wide-angle OLEDs and LTPO31Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
Always-On Retina display with wide-angle OLEDs and LTPO31Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Screen size
Not available
Not available
Resolution
Pixel density
Display area
Touchscreen
Max refresh rate
Not available
Not available
Min refresh rate
Not available
Peak brightness
Minimum brightness
Always-on display
Display cover
Display cover (as published)
Ion-X front glass1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
Flat sapphire crystal1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Platform
0 of 15 differ
Platform
OS at launch
Software
Not available
Not available
Latest OS
watchOS 27.0.114Maker product pagesupport.apple.com/en-us/100100Read 5 October 2026Get the latest software updates. Latest watchOS is 27.0.1. September 28, 2026 release expands beyond the September 23 Series 12 and Ultra 4 release. Model eligibility comes from the compatible-model guide.15Owner's manualsupport.apple.com/en-gb/guide/watch/apd2054d0d5b/27/watchos/27Read 5 October 2026Apple Watch models. The watchOS 27 compatible-model list explicitly includes Series 11 and Ultra 3. Latest 27.0.1 version comes from security releases.
watchOS 27.0.116Maker product pagesupport.apple.com/en-us/100100Read 5 October 2026Get the latest software updates. Latest watchOS is 27.0.1. September 28, 2026 release expands beyond the September 23 Series 12 and Ultra 4 release. Model eligibility comes from the compatible-model guide.17Owner's manualsupport.apple.com/en-gb/guide/watch/apd2054d0d5b/27/watchos/27Read 5 October 2026Apple Watch models. The watchOS 27 compatible-model list explicitly includes Series 11 and Ultra 3. Latest 27.0.1 version comes from security releases.
Works with
Phone requirement
iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 26 or later1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 26 or later1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
App store
Voice assistants
Chipset
Process
Not available
Not available
CPU cores
CPU configuration
Not available
Not available
Max CPU clock
Not available
Not available
GPU
Not available
Not available
Low-power coprocessor
Not available
Not available
Memory
0 of 2 differ
RAM
Not available
Not available
Health sensors
0 of 8 differ
Heart rate sensor
Third-generation optical heart sensor1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
Third-generation optical heart sensor1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
ECG capability
Blood oxygen sensing
Skin temperature sensing
Blood pressure feature
Hypertension notifications1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
Hypertension notifications1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Body composition sensor
Not available
Not available
Skin conductance (EDA)
Not available
Not available
Medical clearances
Not available
Not available
Motion and environment sensors
1 of 9 differ
Accelerometer
Accelerometer range
Not available
Not available
Gyroscope
Barometric altimeter
Not available
Not available
Compass
Ambient light sensor
Depth gauge
Depth gauge range
Health and fitness
3 of 5 differ
Health features
Heart rate alerts, Irregular rhythm notifications, ECG app, Blood oxygen app, Sleep tracking, Sleep stages, Sleep apnea notifications, Cycle tracking, Temperature-based ovulation, Hypertension notifications, Noise monitoring, Heart rate variability1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026Named Health and Wellness items. ECG and irregular rhythm ages 22+, apnea 18+, hypertension excludes diagnosed hypertension and pregnancy. Region, phone and app conditions apply.
Heart rate alerts, Irregular rhythm notifications, ECG app, Blood oxygen app, Sleep tracking, Sleep stages, Sleep apnea notifications, Cycle tracking, Temperature-based ovulation, Hypertension notifications, Noise monitoring1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026Named Health and Wellness items. ECG and irregular rhythm ages 22+, apnea 18+, hypertension excludes diagnosed hypertension and pregnancy. Region, phone and app conditions apply.
Fitness features
Training load, Running dynamics, Pool swim, Open water swim, Interval workouts, Trackback1Maker product pagesupport.apple.com/en-us/125093Read 5 October 202613Owner's manualsupport.apple.com/en-gb/guide/watch/apd66fcd5c5c/27/watchos/27Read 5 October 2026Create a custom workout. Repeating work and recovery intervals are explicitly supported.
Training load, Running dynamics, Pool swim, Open water swim, Interval workouts, Trackback, VO2 max, Running power1Maker product pagesupport.apple.com/en-us/125095Read 5 October 202613Owner's manualsupport.apple.com/en-gb/guide/watch/apd66fcd5c5c/27/watchos/27Read 5 October 2026Create a custom workout. Repeating work and recovery intervals are explicitly supported.
Sport profiles
Not available
Not available
Dive modes
Not available
Not available
External sensors
Not available
Power meter, Speed and cadence1Maker product pagesupport.apple.com/en-us/125095Read 5 October 202622Owner's manualsupport.apple.com/en-gb/guide/watch/apd4cbc876c7/27/watchos/27Read 8 October 2026Connect to compatible Bluetooth accessories for cycling workouts and About Power Zones explicitly identify external power meters, speed sensors and cadence sensors. Pair in Settings > Bluetooth > Health Devices. Physical built-in sensors and phone GPS are excluded. Supports the native watchOS 27 cycling feature on the listed compatible model, not an inferred ANT+ capability.
Safety
1 of 6 differ
Fall detection
Car crash detection
Emergency SOS
Emergency siren
Not available
Not available
Live location sharing
Not available
Yes18Owner's manualsupport.apple.com/en-gb/guide/watch/apd1132106dc/27/watchos/27Read 8 October 2026Both A3281 finish rows are GPS + Cellular. Find My can share the worn watch's location when the paired iPhone or iPad is not nearby, with cellular service and network coverage. The paired-iPhone sharing path remains available. Configure recipients and Location Services before sharing. This routine network-based location sharing is distinct from manual satellite updates.23Owner's manualsupport.apple.com/en-gb/guide/watch/jg49jxgqs19v/27/watchos/27Read 8 October 2026Set up Find My on Apple Watch explicitly supports sharing location from the watch app with a selected recipient and sharing duration. Find My must be set up for the paired account. The iPhone guide identifies when the location source moves from phone to a worn GPS + Cellular watch.24Owner's manualsupport.apple.com/en-gb/guide/iphone/iph01954dc44/iosRead 8 October 2026Set up location sharing requires Share My Location and Find My Location Services. The location source can be the paired iPhone. Apple explicitly says the worn GPS + Cellular watch becomes the sharing source when out of iPhone range. This is the applicable A3281 watch-origin path, with the paired-phone path still available.
Dedicated LED flashlight
Not available
Not available
Positioning
2 of 3 differ
Positioning
GPS (L1), GLONASS, Galileo, QZSS, BeiDou1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
GPS (L1+L5), GLONASS, Galileo, QZSS, BeiDou1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Connectivity
4 of 15 differ
Bluetooth
Not available
Not available
Bluetooth version
Wi-Fi
Not available
Not available
Wi-Fi standard
Wi-Fi bands
Cellular
4G bands
Not available
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71, 38, 39, 40, 41, 531Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026Connectivity explicitly lists A3281 LTE bands. No China A3282 row is inherited.
5G bands
Not available
n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71, n38, n40, n41, n531Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026Connectivity explicitly lists A3281 RedCap 5G NR bands. Full-bandwidth smartphone 5G is not implied.
NFC
Contactless payments
Payment services
Ultra-wideband
Satellite
Not available
Emergency SOS, Messaging, Location sharing1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026Safety and footnote 12. Emergency SOS, Messages and Find My supported in eligible regions. Messages and Find My require carrier plan, SMS requires powered-on online paired iPhone. Two free years after activation.19Maker product pagesupport.apple.com/en-us/125128Read 8 October 2026Exact support for Ultra 3 and later: Find My Send Location is a manual update available once every 15 minutes, outside cellular/Wi-Fi coverage. An active carrier plan on the watch is required. Configure Share My Location and intended recipients before going off-grid. A clear view of sky/horizon is required. Nearby paired iPhone in Airplane Mode prevents satellite use. Free for 2 years after activation, not an unlimited free-service promise. Published availability includes Australia, Austria, Belgium, Canada, France, Germany, Ireland, Italy, Japan, Luxembourg, Mexico, Netherlands, New Zealand, Portugal, Spain, Switzerland, UK and US. Luxembourg requires carrier activation in another country. Mexico needs watchOS 26.0.1+. Carrier support and purchase-country exclusions remain applicable. This is distinct from live_tracking and messaging.20Maker product pagesupport.apple.com/en-us/123924Read 8 October 2026Connect to a satellite explicitly covers Ultra 3 and later, supplied by Globalstar or its partners. Satellite services are not offered on units purchased in Armenia, Belarus, China mainland, Hong Kong, Macao, Kyrgyzstan, Kazakhstan or Russia. Region availability, open-sky conditions and activation apply. Find My and Messages require a carrier plan. Only satellite location_sharing is newly added.
ANT+
Not available
Not available
Audio
1 of 4 differ
Speaker
Calls on the watch
Music on the watch
Controls
2 of 5 differ
Buttons
Named operating buttons
Action button, Side button1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Crown
Rotating bezel
Not available
Not available
Battery and charging
4 of 13 differ
Battery capacity
Not available
Not available
Claimed battery life
AApple Watch Series 11
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 24 |
| Low power | No | 38 |
BApple Watch Ultra 3
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 42 |
| Low power | No | 72 |
Source1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026Power and Battery Life and footnote 8. Normal use includes 600 time checks, 180 notifications, 30 min apps, 60 min workout with Bluetooth music and 6 h sleep over 42 h. Cellular 8 h and paired-iPhone 34 h. Low Power has its own 72 h workload.21Reviewtomsguide.com/wellness/smartwatches/i-wore-the-apple-watch-ultra-3-for-an-entire-marathon-weekend-and-the-battery-life-shocked-meRead 8 October 2026Article repeats the maker 42-hour normal-use claim. Its separate observed roughly three-day 100%-to-empty 49 mm weekend run remains narrative only. Start was Friday 13:00, finish was Monday afternoon with no exact end time. AOD was enabled while worn, sleep tracked Friday/Sunday, the watch was off-wrist in low-power mode on Saturday night, and manual low-power mode was used for the final 2% for about another hour. It included a shake-out run and a 2 h 24 min marathon with normal GPS tracking, without watch music. Firmware, LTE activity and brightness are not stated. No precise 72-hour value or pure-AOD endurance is stored.
Smartwatch mode (claimed)
24h
42h
AOD battery life (up to)
Not available
Not available
GPS mode (claimed)
Not available
Not available
Solar charging
Not available
Not available
Charging method
Charging guidance
Not available
Not available
Max charging power (watch)
Not available
Not available
Fast charging
Quick charge claim
Charge 0 to 80% (claimed)
Full charge time (claimed)
Not available
Not available
Measured
3 of 4 differ
Peak brightness (measured)
Not available
Battery life (measured)
Not available
Not available
Battery tests (measured)
AApple Watch Series 11
| Test | Hours (h) |
|---|---|
| Mixed use, always-on | 36 |
BApple Watch Ultra 3
Not availableStrap
2 of 6 differ
Lug width
Not available
Not available
Quick-release strap
Strap system
Not available
49mm Apple Watch Ultra bands. 44mm, 45mm and 46mm Apple Watch bands for casual everyday use.14Maker product pagesupport.apple.com/en-us/108908Read 5 October 2026Using the Ocean Band, Alpine Loop and Trail Loop. Non-Ultra 44/45/46 mm bands are limited to casual everyday use.
Strap material
Not available
Not available
Strap
Not available
Not available
Strap sizes
AApple Watch Series 11
| Wrist (min) (mm) | Wrist (max) (mm) |
|---|---|
| 130 | 200 |
BApple Watch Ultra 3
| Wrist (min) (mm) | Wrist (max) (mm) |
|---|---|
| 130 | 210 |
Regulatory
None of 3 known
FCC ID
Not available
Not available
SAR limb (US)
Not available
Not available
SAR limb (EU)
Not available
Not available
Other certifications
Not available
Not available
In the box
1 of 2 differ
In the box
Apple Watch Series 11, Band, Apple Watch Magnetic Fast Charger to USB-C Cable (1m)1Maker product pagesupport.apple.com/en-us/125093Read 5 October 2026
Apple Watch Ultra 3, Band, Apple Watch Magnetic Fast Charger to USB-C Cable (1m)1Maker product pagesupport.apple.com/en-us/125095Read 5 October 2026
Power adapter in box
Links
Not compared
Product page
Spec sheet
Manual
EPREL registration number
Not available
Not available
Warranty
None of 1 known
Manufacturer warranty (source market)
Not available
Not available
Both are also in the API. Back to all smartwatches.













