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Apple Watch Ultra 3 - Tech Specs

Year introduced: 2025

Material and Finish

Titanium case, Grade 5

  • Natural

  • Black

Size and Weight

  • Height: 49mm

  • Width: 44mm

  • Depth: 12mm

  • 422x514 pixels

  • 1,245 sq mm display area

  • Weight (natural): 61.6 grams

  • Weight (black): 61.8 grams

  • Fits 130–210mm wrists

Hardware and Buttons

  • Microphone

  • Speaker

  • Customisable Action button

  • Siren/Speaker

  • Antennas (GPS, cellular, satellite)

  • Side button

  • Digital Crown

  • Depth gauge/water temperature sensor/altimeter

Controls

  • Customisable Action button

  • Digital Crown with haptic feedback

  • Side button

  • Double tap and wrist flick gestures

  • Siri with on‑device processing

Chip

  • S10 chip with 64‑bit dual‑core processor

  • 4-core Neural Engine

  • 64GB capacity

Sensors

  • Electrical heart sensor

  • Third-generation optical heart sensor

  • Blood oxygen sensor1

  • Temperature sensor2

  • Depth gauge

  • Water temperature sensor

  • Compass

  • Always-on altimeter

  • High-g accelerometer

  • High dynamic range gyroscope

  • Ambient light sensor

Health and Wellness

  • Blood Oxygen app1

  • ECG app3

  • Cycle Tracking app with retrospective ovulation estimates4

  • Heart Rate app

  • High and low heart rate notifications

  • Irregular rhythm notifications5

  • Medications app

  • Mindfulness app with state of mind tracking

  • Noise app

  • Sleep app including sleep stages

  • Sleep score

  • Sleep apnoea notifications6

  • Hypertension notifications7

Display

  • Always‑On Retina display with wide‑angle OLEDs and LTPO3

  • 1Hz refresh

  • Active area (422x514 pixels, 326 pixels per inch)

  • Flat sapphire crystal display

  • Up to 3,000 nits peak brightness

  • 1 nit minimum brightness

  • Night Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering)

Audio

  • Three-microphone array with beamforming and wind noise mitigation

  • Dual speakers

  • Media playback

  • Siren

Power and Battery Life

  • Multi‑day battery life, up to 42 hours of normal use8

  • Up to 72 hours in Low Power Mode8

  • Built-in rechargeable lithium‑ion battery

  • Fast-charge capable9

  • Up to 80% charge in about 45 minutes9

  • 15 minutes for up to 12 hours of normal use10

  • 5 minutes for up to 8 hours of sleep tracking10

Learn more about Power and Battery Life

Oper­at­ing System

watchOS

watchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe and connected.

Workouts and Activity

  • Running

  • Custom workouts

  • Customisable Workout Views

  • Training Load / Workout Effort Tracking

  • Heart Rate Zones (customisable)

  • Post‑workout heart rate

  • VO2 max

  • Race Route

  • Pacer

  • Precision Start using Action button

  • Stride Length, Ground Contact Time, Cadence, Power and Vertical Oscillation

  • Automatic track detection

  • Multisport workout

  • Hiking

  • Compass with bearing, incline, elevation and coordinates

  • Custom waypoints

  • Automatically generated waypoints to cellular connectivity

  • Backtrack GPS data

  • Offline maps with custom route creation

  • Elevation alerts

  • Topographic maps for thousands of national and regional parks (US only)

  • Hundreds of curated hikes across all 63 US national parks

  • Siren

  • Cycling

  • Custom workouts

  • Customisable Workout Views

  • Training Load / Workout Effort Tracking

  • Average speed, elevation gained and distance

  • Bluetooth-compatible with power meters

  • Functional Threshold Power (with power meter connection)

  • Live Activity on iPhone

  • Heart Rate Zones (customisable)

  • Cadence (rpm), speed (mph), power (watts), power zones (with power meter connection)

  • Post‑workout heart rate

  • Swimming

  • Custom workouts (pool swim) with haptics to cue the next interval

  • Customisable Workout Views (pool swim, open water swim)

  • Splits and auto sets

  • SWOLF score

  • Automatic stroke and count detection (including kickboard)

  • Water temperature

  • Average pace, total distance, heart rate and lengths

  • Diving

  • Recreational dive to 40m

  • Dive computer app (available on the App Store)11

  • Automatic launch at 1m

  • Current and maximum depth duration

  • GPS entry and exit points

  • Depth gauge

  • Water temperature sensor

More Workouts

  • Skiing

  • Snowboarding

  • Outdoor Rowing

  • Paddling

  • Golf

  • Walk

  • Elliptical

  • Rowing Machine

  • Stair Stepper

  • HIIT

  • Yoga

  • Functional Strength Training

  • Dance

  • Cooldown

  • Core Training

  • Pilates

  • Tai Chi

  • Wheelchair

  • Kickboxing

  • Multisport

  • and more

Safety

  • Satellite connectivity (Emergency SOS, Find My)12

  • Emergency SOS13

  • International emergency calling14

  • Siren

  • Torch

  • Crash Detection13

  • Fall Detection

  • Last Emergency Call Availability Waypoint

  • Noise monitoring

  • Backtrack

Durability

  • Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:201015

  • Dust resistance IP6X under IEC 6052916

  • EN13319 recreational scuba diving to 40m (±1m accuracy)

  • Tested to MIL-STD 810H against subsections for altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration

Connectivity

  • L1 and L5 precision dual‑frequency GPS (GPS, GLONASS, Galileo, QZSS and BeiDou)

  • 5G17 and LTE18

  • Wi-Fi 4 (802.11n)

  • Support for 2.4GHz and 5GHz Wi‑Fi networks

  • Bluetooth 5.3

  • Second-generation Ultra Wideband chip19

  • NFC: Apple Pay,20 GymKit

  • Support for Apple Watch For Your Kids21

Accessi­bility

Built-in accessibility features supporting vision, mobility, hearing and cognitive disabilities.

Learn more about Accessi­bility

Features include:

  • VoiceOver

  • Zoom

  • On/Off Labels

  • Reduce Transparency

  • Increase Contrast

  • Colour Filters

  • Text Size

  • Bold Text

  • Reduce Motion

  • Hourly Chimes

  • AssistiveTouch

  • Button Click Speed

  • Touch Accommodations

  • Auto-Answer Calls

  • Type to Siri

  • RTT Support

  • Audio Volume Balance

  • Audio Transcription

  • Live Speech

  • Accessi­bility Shortcut

  • Mono Audio

  • Taptic Time

  • Personal Voice

  • Live Listen

En­viron­men­tal Require­ments

  • On-wrist operating temperature: –20° to 55° C (–4° to 130° F)

  • Oper­at­ing temperature: 0° to 35° C (32° to 95° F)

  • Non-operating storage temperature: –20° to 45° C (–4° to 113° F)

  • Dive operating temperature: 0° to 40° C (32° to 104° F)

  • Relative humidity: 5% to 90% non-condensing

  • Oper­at­ing altitude: –500 to 9,000 metres (–1,600 to 29,500 feet)

Apple Watch and the Environment

Apple Watch Ultra 3 is designed to reduce environmental impact:22

See the Apple Watch Ultra 3 Product En­viron­men­tal Report (PDF)

Progress towards Apple 2030

  • Apple 2030 is our commitment to be carbon neutral for our entire carbon footprint. Our plan to decarbonise products is rigorous and focuses on transitioning to low‑carbon electricity, designing with recycled and low‑carbon materials, and prioritising lower‑carbon ways of shipping products, like sea freight.

See Apple’s commitment

Materials

Apple Watch Ultra 3 is made with 40% recycled content,23 including:

  • 100% recycled titanium in the case

  • 100% recycled cobalt and 95% recycled lithium in the battery

  • 100% recycled rare earth elements in all magnets

  • 100% recycled gold plating and tin solder in all Apple‑designed printed circuit boards

  • 100% recycled tungsten in the Taptic Engine

  • 80% recycled steel in the speaker and Taptic Engine

Energy

  • 100% of manufacturing electricity for Apple Watch Ultra 3 is sourced from renewable energy24

  • 100% of expected customer energy use matched with low-carbon electricity

  • Meets California Energy Commission’s energy efficiency standards for battery charger systems25

Packaging

  • 100% fibre-based packaging26

Waste

  • No established final assembly sites generate waste sent to landfill as part of Apple’s Zero Waste Programme27

Smarter chemistry28

  • All of the materials used in Apple products, accessories and packaging are covered by the requirements of our Regulated Substances Specification, which was one of the first in industry to restrict the use of key substances of concern. See the latest En­viron­men­tal Progress Report to understand Apple’s recent efforts in phasing out these chemistries.

Compatibility

iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 26 or later

In the Box

  • Apple Watch Ultra 3

  • Strap

  • Apple Watch Magnetic Fast Charger to USB-C Cable (1m)

  1. The Blood Oxygen app is for wellness purposes only and not for medical use.

  2. The temperature sensing feature is not intended for medical use. Temperature sensing is available only on Apple Watch Series 8 and later, Apple Watch SE 3 and all Apple Watch Ultra models.

  3. The ECG app is available on Apple Watch Series 4 and later (excluding Apple Watch SE models) and can generate an ECG similar to a single-lead electrocardiogram. Intended for use by people 22 years old and over.

  4. The Cycle Tracking app should not be used for birth control or to diagnose a health condition.

  5. Irregular rhythm notification requires the latest version of watchOS and iOS. It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (AF).

  6. Sleep apnoea notifications are available on Apple Watch Series 9 and later, Ultra 2 and later, and SE 3. The feature is intended to detect signs of moderate to severe sleep apnoea for people 18 years old or older without a diagnosis of sleep apnoea.

  7. As of 9 September 2025, hypertension notifications are pending regulatory review and expected to be cleared this month, with availability on Apple Watch Series 9 and later and Apple Watch Ultra 2 and later. The feature is not intended for use by people under 22 years old, those who have been previously diagnosed with hypertension, or pregnant persons.

  8. Multi-day battery life including sleep tracking is based on the following use: 600 time checks, 180 notifications, 30 minutes of app use, a 60‑minute workout with music playback from Apple Watch via Bluetooth, and 6 hours of sleep tracking over the course of 42 hours; Apple Watch Ultra 3 usage includes a total of 8 hours of cellular connection and 34 hours of connection to iPhone via Bluetooth over the course of 42 hours. Battery life in Low Power Mode including sleep tracking is based on the following use: 900 time checks, 270 notifications, 45 minutes of app use, two 60‑minute workouts with music playback from Apple Watch via Bluetooth and 18 hours of sleep tracking over the course of 72 hours; Apple Watch Ultra 3 usage includes on‑demand cellular connection and 60 hours of connection to iPhone via Bluetooth over the course of 72 hours. Testing conducted by Apple in July and August 2025 using pre‑production Apple Watch Ultra 3 paired with an iPhone; all devices tested with pre‑release software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

  9. Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charger to USB‑C Cable. Testing conducted by Apple in July and August 2025 using pre‑production Apple Watch Ultra 3 paired with an iPhone; all devices tested with pre‑release software, Apple Watch Magnetic Fast Charger to USB‑C Cable (Model A2515), and Apple 20W USB-C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

  10. Testing conducted by Apple in July and August 2025 using pre‑production Apple Watch Ultra 3 paired with an iPhone; all devices tested with pre‑release software, Apple Watch Magnetic Fast Charger to USB‑C Cable (Model A2515) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.

  11. A subscription is required for Oceanic+. Available on the App Store. Apple Watch Series 11 supports snorkelling to 6 metres; Apple Watch Ultra 3 supports recreational scuba diving to 40 metres. Always follow diving protocols and dive with a companion and have a secondary device.

  12. Emergency SOS and Find My via satellite are included free for two years with the activation of Apple Watch Ultra 3. Connection and response times vary based on location, site conditions and other factors. Find My via satellite requires a mobile plan. Satellite connectivity provided by Globalstar and its affiliates. See support.apple.com/en-gb/123924 for more information.

  13. Emergency SOS requires a satellite connection, cellular connection or Wi‑Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that mobile service is available. Some mobile networks may not accept an emergency call from your Apple Watch if your Apple Watch isn’t activated, if it isn’t compatible with or configured to operate on a particular mobile network, if it isn’t set up for mobile service, or if the mobile network does not support emergency calling over IMS. See support.apple.com/en-gb/108374 and apple.com/uk/watch/cellular for more information.

  14. Requires Apple Watch Series 7, Apple Watch SE, Apple Watch Ultra or later. For a list of supported countries and regions, see apple.com/uk/watchos/feature-availability.

  15. Apple Watch Ultra 3 has a water resistance rating of 100 metres under ISO standard 22810:2010. It may be used for recreational scuba diving (with compatible third-party app from the App Store) to 40 metres and high-speed water sports. Apple Watch Ultra 3 should not be used for diving below 40 metres. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/en-gb/109522.

  16. Apple Watch Ultra 3 is rated IP6X dust resistant.

  17. Data plan required. 5G is available in selected markets and through selected network providers. Speeds vary based on site conditions and network. For details on 5G support, contact your provider and see apple.com/uk/watch/cellular.

  18. Wireless service plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. Check apple.com/uk/watch/cellular for participating network providers and eligibility. See support.apple.com/en-gb/HT207578 for additional setup instructions.

  19. Ultra Wideband availability varies by region.

  20. To use Apple Pay you need a supported card from a participating card issuer. To check if your card is compatible with Apple Pay, contact your card issuer. Apple Pay is not available in all markets. View Apple Pay countries and regions.

  21. Not all features will be available if the Apple Watch is set up through Apple Watch For Your Kids. Check support.apple.com/en-gb/109036 for details. Wireless service plan required for cellular service. Check apple.com/uk/watch/cellular for participating network providers and eligibility.

  22. Data accurate as of product launch.

  23. Product recycled or renewable content is the mass of certified recycled material relative to the overall mass of the device, not including packaging or in‑box accessories.

  24. Our manufacturing electricity is sourced from clean electricity, including a mix of supplier and Apple clean-energy projects.

  25. Apple Watch Ultra 3 meets California Energy Commission’s Energy Efficiency Standards for Small Battery Charger Systems as outlined in the California Code of Regulations.

  26. Based on retail packaging as shipped by Apple. Breakdown of US retail packaging by weight. Adhesives, inks and coatings are excluded from our calculations of plastic content and packaging weight.

  27. All established final assembly supplier sites — those that have been Apple suppliers for more than one year — for Apple Watch Ultra 3 are third‑party verified as Zero Waste by UL LLC (UL 2799 Standard). UL requires at least 90% diversion through methods other than waste to energy to achieve Zero Waste to Landfill (Silver 90–94%, Gold 95–99% and Platinum 100%) designations.

  28. Apple’s Regulated Substances Specification describes Apple’s restrictions on the use of certain chemical substances in materials in Apple products, accessories, manufacturing processes and packaging used for shipping products to Apple’s end customers. Restrictions are derived from international laws or directives, regulatory agencies, eco-label requirements, environmental standards and Apple policies. Every Apple product is free of PVC and phthalates except for AC power leads in India, Thailand (for two-pin AC power leads) and South Korea, where we continue to seek government approval for our PVC and phthalates replacement. Apple products comply with the European Union Directive 2011/65/EU and its amendments, including exemptions for the use of lead such as high-temperature solder. Apple is working to phase out the use of these exempted substances for new products where technically possible.

Apple Watch Ultra 3, Apple Watch Series 11 and Apple Watch SE 3 require iPhone 11 or later with iOS 26 or later.

Features are subject to change. Some features, applications and services may not be available in all regions or all languages. View complete list.