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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

  • 422 by 514 pixels

  • 1245 sq mm display area

  • Weight (natural): 61.6 grams

  • Weight (black): 61.8 grams

  • Fits 130–210mm wrists

Hardware and Buttons

  • Microphone

  • Speaker

  • Customizable Action button

  • Siren/Speaker

  • Antennas (GPS, cellular/satellite)

  • Side button

  • Digital Crown

  • Depth gauge/Water temperature sensor/Altimeter

Controls

  • Customizable 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 apnea notifications6

  • Hypertension notifications7

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 3000 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 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 use 10

  • 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

  • Customizable Workout Views

  • Training Load / Workout Effort Tracking

  • Heart Rate Zones (customizable)

  • Postworkout 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 (U.S. only)

  • Hundreds of curated hikes across all 63 U.S. national parks

  • Siren

  • Cycling

  • Custom workouts

  • Customizable 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 (customizable)

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

  • Postworkout heart rate

  • Swimming

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

  • Customizable 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 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

  • Rower

  • Stair Stepper

  • HIIT

  • Yoga

  • Functional Strength Training

  • Dance

  • Cooldown

  • Core Training

  • Pilates

  • Tai Chi

  • Wheelchair

  • Kickboxing

  • Multisport

  • and more

Safety

  • Satellite connectivity (Emergency SOS, Messages, Find My)12

  • Emergency SOS13

  • International emergency calling14

  • Siren

  • Flashlight

  • 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)

  • Cellular: Supports RedCap for 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 Pay20, GymKit

  • Support for Apple Watch For Your Kids21

  • International roaming22

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

  • Color 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: –4° to 130° F (–20° to 55° C)

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

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

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

  • Relative humidity: 5% to 90% noncondensing

  • Operating altitude: –1600 feet to 29,500 feet (–500m to 9000m)

Apple Watch and the Environment

Apple Watch Ultra 3 is designed to reduce environmental impact:23

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

Progress toward Apple 2030

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

See Apple’s commitment

Materials

Apple Watch Ultra 3 is made with 40% recycled content,24 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 electricity25

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

  • Meets California Energy Commission’s energy efficiency standards for battery charger systems26

Packaging

  • 100% fiber-based packaging27

Waste

  • No established final assembly sites generate waste sent to landfill as part of Apple’s Zero Waste Program28

Smarter chemistry29

  • 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 (1m)

  1. The Blood Oxygen app is for wellness purposes only and not for medical use. Measurements are calculated and viewed on iPhone in the Health app.

  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 or older.

  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).

  6. Sleep apnea 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 apnea for people 18 years old or older without a diagnosis of sleep apnea.

  7. Hypertension notifications are 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 preproduction Apple Watch Ultra 3 paired with an iPhone; all devices tested with prerelease software. Battery life varies by use, configuration, cellular 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 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. 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.

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

  12. Emergency SOS, Find My, and Messages 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 and Messages via satellite require a carrier plan. To send and receive SMS from cellular models of Apple Watch over satellite, your paired iPhone must be powered on and connected to Wi-Fi or an active cellular network, but your iPhone doesn’t need to be nearby. SMS message rates may apply. Satellite connectivity provided by Globalstar and its affiliates. See support.apple.com/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 cellular service is available. Some cellular 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 cellular network, if it isn’t set up for cellular service, or if the cellular network does not support emergency calling over IMS. See support.apple.com/108374 and apple.com/watch/cellular for more information.

  14. 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/watchos/feature-availability.

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

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

  17. Data plan required. 5G is available in select markets and through select carriers. Speeds vary based on site conditions and carrier. For details on 5G support, contact your carrier and see apple.com/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/watch/cellular for participating wireless carriers and eligibility. See support.apple.com/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/109036 for details. Wireless service plan required for cellular service. Check apple.com/watch/cellular for participating wireless carriers and eligibility.

  22. International roaming coverage is determined by your carrier. Please check with your carrier for details. For a list of supported carriers, see apple.com/watch/cellular.

  23. Data accurate as of product launch.

  24. 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.

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

  26. 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.

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

  28. 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.

  29. 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.