Apple Watch Ultra 4 (2026)

Height: 49mm
Width: 44mm
Depth: 12mm
422 by 514 pixels
1245 sq mm display area
Weight (natural): 63.0 grams
Weight (black): 63.1 grams
Fits 130–210mm wrists
Hardware and Buttons
Microphone
Speaker
Health Sensing System
Customizable Action button
Siren/Speaker
Antennas (GPS, cellular/satellite)
Microphone
Side button
Microphone
Digital Crown
Depth gauge/Water temperature sensor/Altimeter
1
2
3
4
5
6
7
8
9
10
11

Customizable Action button
Digital Crown with haptic feedback
Side button
Single tap, double tap, and wrist flick gestures
Siri powered by Apple Intelligence1

S11 chip with 64-bit dual-core processor
Audio Intelligence (Live Rewind, Siri Recap, Shazam, Sound Recognition)2
4-core Neural Engine
64GB capacity
Apple Intelligence and Siri AI1
The next generation of Apple Intelligence is centered around you, integrated into your apps, and built with privacy. Apple Intelligence powers Siri AI — an entirely new version of Siri that’s more personal, conversational, and powerful, along with helpful features across apps.

Health Sensing System: third‑generation electrical heart sensor, always‑on optical heart sensor, blood oxygen sensor,3 temperature sensor4
Depth gauge
Water temperature sensor
Compass
Always‑on altimeter
High‑g accelerometer
High dynamic range gyroscope
Ambient light sensor
Health and Wellness
Readiness app
Vitals app with heart rate, respiratory rate, wrist temperature, sleep duration, and heart rate variability (HRV)5
Blood Oxygen app3
ECG app6
Heart Rate app
High and low heart rate notifications
Recovery HRV
High‑frequency background heart rate tracking
Irregular rhythm notifications7
Advanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support8
Medications app9
Mindfulness app with state of mind tracking
Noise app
Sleep app including sleep stages
Sleep score
Sleep apnea notifications10
Hypertension notifications11

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
3000 nits peak brightness
1 nit minimum brightness
Night Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering)

Three-microphone array with beamforming and wind noise mitigation
Dual speakers
Media playback
Siren
Power and Battery Life
Multiday battery life, up to 50 hours of normal use12
Up to 84 hours in Low Power Mode12
Up to 18 hours outdoor workout13
Up to 25 hours Extended Workout13
Up to 45 hours Max Extended Workout13
Built‑in rechargeable lithium‑ion battery
Fast‑charge capable14
Up to 80% charge in about 45 minutes14
15 minutes for up to 18 hours of normal use15
5 minutes for up to 10 hours of sleep tracking15

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
Cadence, Stride Length, Ground Contact Time, Vertical Oscillation, and Running Power
Automatic track detection
Multisport workout
Heart Rate Zone, pace, and target alerts
Hiking
Compass with bearing, incline, elevation, and coordinates
Custom waypoints
Automatically generated waypoints to cellular connectivity
Backtrack GPS data
Offline maps with custom route creation16
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)17
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

Satellite communications (Emergency SOS, Messages, Find My)18
Emergency SOS19
International emergency calling20
Siren
Flashlight
Fall Detection19
Crash Detection19
Last Emergency Call Availability Waypoint
Noise monitoring
Backtrack
Check In
Durability
Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:201021
Dust resistance IP6X under IEC 6052922
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

All models
Support for 2.4GHz and 5GHz Wi‑Fi networks
Wi‑Fi 4 (802.11n)
Bluetooth 5.3
Precision dual‑frequency GPS (GPS, Galileo, QZSS, and BeiDou)
Second‑generation Ultra Wideband chip23

GymKit
Model A3579
Supports RedCap for 5G25 and LTE26
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 Kids27
International roaming28

Built‑in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
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
Sound Recognition

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
Progress toward Apple 2030
Apple 2030 is our goal to be carbon neutral across our value chain. We design our products to be less carbon intensive by prioritizing the use of recycled and renewable content and low‑carbon materials while focusing on the energy efficiency of our software and hardware.
Materials
Apple Watch Ultra 4 is made with 45% recycled content,29 including:
100% recycled cobalt in the battery
100% recycled copper wire and recycled tungsten in the Taptic Engine
100% recycled gold plating and tin solder in all Apple‑designed printed circuit boards
95% recycled lithium in the battery
80% recycled steel in the battery enclosure and Taptic Engine components
100% recycled titanium in the case
Packaging
100% fiber‑based packaging30
Energy
100% of manufacturing electricity for Apple Watch Ultra 4 is sourced from renewable electricity31
100% of expected customer energy use matched with renewable electricity32
Waste
No established final assembly sites generate waste sent to landfill as part of Apple’s Zero Waste Program33
Smarter chemistry34
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.

iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later

Apple Watch Ultra 4
Band
Apple Watch Magnetic Fast Charger to USB‑C Cable (1m)