Specs / Apple / Apple Watch Ultra 3

Apple Watch Ultra 3 Specifications

Name: Apple Watch Ultra 3
Brand: Apple

Complete Apple Watch Ultra 3 technical specifications · Released 2025 · model numbers, colors, storage, dimensions and hardware details.

Chip: S10 chip with 64-bit dual-core processor; 4-core Neural Engine; 64GB capacity Display: Always‑On Retina display with wide‑angle OLEDs and LTPO3; 1Hz refresh; Active area (422 b… 422 by 514 pixel

Check IMEI / Serial All specs

Display

Always‑On Retina display with wide‑angle OLEDs and LTPO3; 1Hz refresh; Active area (422 by 514 pixels, 326 pi… · 422 by 514 pixel

Chip

S10 chip with 64-bit dual-core processor; 4-core Neural Engine; 64GB capacity

Storage / Colors

64GB · Titanium case, Grade 5, Natural, Black

Weight / OS

61.6 g · watchOS

Apple Watch Ultra 3 technical specifications

This page contains complete technical specifications for Apple Watch Ultra 3, including display, chip, storage, colors, model numbers, dimensions, weight, operating system, connectivity, battery information and other hardware details.

Use this information to compare Apple devices, identify the exact model, check compatibility and verify key hardware features before service, repair, resale or purchase.

↔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

▣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)

⚙Chip

S10 chip with 64-bit dual-core processor
4-core Neural Engine
64GB capacity

iSensors

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

iOperating 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.

iAccessibility

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

iEnvironmental 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)

iIn the Box

Apple Watch Ultra 3
Band
Apple Watch Magnetic Fast Charger to USB-C Cable (1m)

iApple 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.

iAudio

Three-microphone array with beamforming and wind noise mitigation
Dual speakers
Media playback
Siren

iCompatibility

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

⌁Connectivity

All Models
Support for 2.4GHz and 5GHz Wi-Fi networks
Wi-Fi 4 (802.11n)
Bluetooth 5.3
L1 and L5 precision dual-frequency GPS (GPS, GLONASS, Galileo, QZSS, and BeiDou)
Second-generation Ultra Wideband chip17
Apple Pay18
GymKit
Model A3281:
Supports RedCap for 5G19 and LTE20
FDD‑5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71)
TDD‑5G NR (Bands n38, n40, n41, n53)
FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71)
TDD‑LTE (Bands 38, 39, 40, 41, 53)
Support for Apple Watch For Your Kids21
International roaming22

iControls

Customizable Action button
Digital Crown with haptic feedback
Side button
Double tap and wrist flick gestures
Siri with on‑device processing

iDurability

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

iHardware and Buttons

Microphone
Speaker
Customizable Action button
Siren/Speaker
Antennas (GPS, cellular/satellite)
Side button
Digital Crown
Depth gauge/Water temperature sensor/Altimeter

iHealth 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

iMaterial and Finish

Titanium case, Grade 5
Natural
Black

⚡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

iSafety

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

iWorkouts 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
Average speed, elevation gained, and distance
Bluetooth-compatible with power meters
Functional Threshold Power (with power meter connection)
Live Activity on iPhone
Cadence (rpm), speed (mph), power (watts), power zones (with power meter connection)
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
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

Apple Watch Ultra 3 FAQ

What year was Apple Watch Ultra 3 released?

Apple Watch Ultra 3 was released in 2025.

What is the display size of Apple Watch Ultra 3?

Apple Watch Ultra 3 has Always‑On Retina display with wide‑angle OLEDs and LTPO3; 1Hz refresh; Active area (422 b… with 422 by 514 pixel resolution.

What chip does Apple Watch Ultra 3 use?

Apple Watch Ultra 3 uses S10 chip with 64-bit dual-core processor; 4-core Neural Engine; 64GB capacity.

What storage capacities are available for Apple Watch Ultra 3?

Available storage capacities include 64GB.

What are the model numbers for Apple Watch Ultra 3?

Known model numbers include A3281, A2515, A2305.