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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: 49 mm

  • Width: 44 mm

  • Depth: 12 mm

  • 422 by 514 pixels

  • 1,245-sq-mm display area

  • Weight (natural): 61.6 grams

  • Weight (black): 61.8 grams

  • Fits 130–210-mm 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

Display

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

  • 1Hz refresh

  • Active area (422 by 514 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

  • Multiday battery life, up to 42 hours of normal use7

  • Up to 72 hours in Low Power Mode7

  • Built-in rechargeable lithium-ion battery

  • Fast-charge–capable8

  • Up to 80% charge in about 45 minutes8

  • 15 minutes for up to 12 hours of normal use 9

  • 5 minutes for up to 8 hours of sleep tracking9

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

  • Customised 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

  • Customised waypoints

  • Automatically generated waypoints to mobile connectivity

  • Backtrack GPS data

  • Offline maps with customised route creation

  • Elevation alerts

  • Siren

  • Cycling

  • Customised 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 (kph), power (watts), power zones (with power meter connection)

  • Post-workout heart rate

  • Swimming

  • Customised 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 laps

  • Diving

  • Recreational dive to 40 m

  • Dive computer app (available on the App Store)10

  • Automatic launch at 1 m

  • 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

  • Rower

  • Stair Stepper

  • HIIT

  • Yoga

  • Functional Strength Training

  • Dance

  • Cooldown

  • Core Exercise

  • Pilates

  • Tai Chi

  • Wheelchair

  • Kickboxing

  • Multisport

  • and more

Safety

  • Satellite connectivity (Emergency SOS, Find My)11

  • Emergency SOS12

  • International emergency calling13

  • Siren

  • Torch

  • Crash Detection12

  • Fall Detection

  • Last Emergency Call Availability Waypoint

  • Noise monitoring

  • Backtrack

Durability

  • Water resistance to 100 m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:201014

  • Dust resistance IP6X under IEC 6052915

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

  • 4G LTE16

  • Wi-Fi 4 (802.11n)

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

  • Bluetooth® 5.3

  • Second-generation Ultra Wideband chip17

  • NFC: Apple Pay18, GymKit

  • Support for Apple Watch For Your Kids19

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% noncondensing

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

Apple Watch and the Environment

Apple Watch Ultra 3 is designed to reduce environmental impact:20

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 ocean freight.

See Apple’s commitment

Materials

Apple Watch Ultra 3 is made with 40% recycled content21, 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 energy22

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

  • Meets California Energy Commission’s energy efficiency standards for battery charger systems23

Packaging

  • 100% fibre-based packaging24

Waste

  • No established final assembly sites generate waste sent to landfill as part of Apple’s Zero Waste Program25

Smarter chemistry26

  • 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

  • Band

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

  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. Always follow directions for use. The device is not intended to replace traditional methods of diagnosis. Consult a doctor if atrial fibrillation is detected or if you have symptoms of a heart attack, stroke or other cardiovascular conditions.

  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 (AFib). Always follow directions for use. The device is not intended to replace traditional methods of diagnosis. Consult a doctor if atrial fibrillation is detected or if you have symptoms of a heart attack, stroke or other cardiovascular conditions.

  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 aged 18 years or older without a diagnosis of sleep apnoea. Always follow directions for use. The feature is not intended for use in screening for, diagnosing, treating or managing sleep apnoea. Even without a notification, sleep apnoea may still be present. Consult a medical practitioner if you have symptoms of sleep apnoea, or any other breathing disturbance.

  7. 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 mobile network 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 mobile network 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 preproduction Apple Watch Ultra 3 paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, mobile network, signal strength and many other factors; actual results will vary.

  8. 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 preproduction Apple Watch Ultra 3 paired with an iPhone; all devices tested with prerelease 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.

  9. Testing conducted by Apple in July and August 2025 using preproduction Apple Watch Ultra 3 paired with an iPhone; all devices tested with prerelease 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. 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, dive with a companion and have a secondary device.

  11. Emergency SOS and Find My via satellite are included for 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 carrier plan. Satellite connectivity is provided by Globalstar and its affiliates. See support.apple.com/123924 for more information.

  12. Emergency SOS requires a satellite connection, mobile network 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 a mobile network 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-au/108374 and apple.com/au/watch/cellular for more information.

  13. International emergency calling requires an Apple Watch Series 5 (GPS + Cellular), Apple Watch SE (GPS + Cellular), Apple Watch Ultra or later. For a list of supported countries and regions, see apple.com/au/watchos/feature-availability.

  14. 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-au/109522.

  15. Apple Watch Ultra 3 is rated IP6X dust-resistant.

  16. Carrier plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. International roaming is not supported. Check apple.com/au/watch/cellular for participating carriers and eligibility. See support.apple.com/en-au/HT207578 for additional setup instructions.

  17. Ultra Wideband availability varies by region.

  18. 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.

  19. Not all features will be available if the Apple Watch is set up through Apple Watch For Your Kids. Check support.apple.com/en-au/109036 for details. Carrier plan required for cellular service. Check apple.com/au/watch/cellular for participating wireless carriers and eligibility.

  20. Data is accurate as of product launch.

  21. 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.

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

  23. 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.

  24. 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.

  25. 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.

  26. 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 cords in India, Thailand (for two-prong AC power cords) 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.