Apple Watch Ultra 4

Display
Display technology: OLED
Display technology marketing name: Retina
Display area: 1245 mm²
Display brightness: 3000 cd/m²
Display brightness (min): 1 cd/m²
Pixel density: 326 ppi
Minimum refresh rate: 1 Hz
Feature: Always-on display
Feature: Colour display
Display type: Digital
Display resolution: 422 x 514 pixels
Feature: Touchscreen
Feature: Rounded display corners
Watch glass type: Sapphire
Processor
Processor manufacturer: Apple
Processor model: S11
Processor cores: 2
Neural processor unit (NPU): Apple Neural Engine (ANE)
Neural processor unit (NPU) cores: 4
Design
Band material: Silicone
Band size: One Size
Shape: Rectangular
Wrist size range: 130 – 200 mm
Market positioning: Smartwatch
Watch case size: 49 mm
Watch case colour: Black
Watch case material: Titanium
Band colour: Black
Protection features: Dust resistant, Water resistant, Waterproof
International Protection (IP) code: IP6X
Feature: Removable strap
Feature: Magnetic charging connector
Waterproof up to: 100 m
Performance
Mobile operating systems supported: iOS
Operating system installed: watchOS 27
Flash memory: 64 GB
Feature: 64-bit computing
Feature: Built-in microphone
Feature: Built-in speaker(s)
Feature: Crash detection
Feature: Fall detection
Feature: Noise monitoring
Feature: Backtrack
Audio Intelligence: Live Rewind, Siri Recap, Sound Recognition, Shazam
Feature: Built-in flashlight
Feature: Check In function
Feature: Health Sensing System
Features
Feature: Heart rate monitor
Heart rate sensor type: Electrical, Optical
Heart rate measuring: Automatic, Manual
Feature: Blood oxygen sensor
Feature: Depth gauge sensor
Feature: Sleep apnea detection
Feature: Distance travelled
Feature: Pedometer
Feature: Accelerometer
Feature: Gyroscope
Feature: Activity tracker
Feature: Multisport mode
Feature: Quality of sleep
Feature: Double tap gesture
Feature: Irregular rhythm notifications
Feature: Hypertension notifications
Feature: SOS alert function
Personal info management (PIM): SOS
Feature: Ambient light sensor
Virtual assistant: Apple Siri
Feature: Haptic feedback
Feature: Electronic compass
Feature: Skin temperature sensor
Feature: Virtual pacer function
Feature: Running dynamics
Feature: Workout tracking
Feature: Water temperature sensor
Feature: Apple Intelligence
Feature: Altimeter
Military standard: MIL-STD-810H
Compatible products: iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later
Network
Feature: Mobile network connection
Mobile network generation: 5G
4G standard: LTE-TDD & LTE-FDD
5G standard: Sub6 TDD, Sub6 FDD, NR
Feature: GPS (satellite)
Feature: BeiDou
Feature: Galileo
Feature: Quasi-Zenith Satellite System (QZSS)
Ports & interfaces
Wi-Fi standards: Wi-Fi 4 (802.11n)
Feature: Bluetooth
Feature: Bluetooth Low Energy (BLE)
Feature: Near Field Communication (NFC)
Feature: Wi-Fi
Bluetooth version: 5.3
Headphone connectivity: Bluetooth
Power
Battery type: Built-in battery
Battery life (max): 50 h
Battery life (power save mode): 84 h
Feature: Wireless charging
Feature: Fast charging
Operational conditions
Operating temperature (T-T): 0 – 35 °C
Storage temperature (T-T): -20 – 45 °C
Operating relative humidity (H-H): 5 – 90%
Operating altitude: -500 – 9000 m
Battery
Battery technology: Lithium-Ion (Li-Ion)
Weight & dimensions
Width: 44 mm
Depth: 49 mm
Thickness: 1.2 cm
Weight: 63.1 g
Packaging data
Package width: 214 mm
Package depth: 118 mm
Package height: 38 mm
Package weight: 448 g
Packaging content
Cables included: Magnetic Fast Charger to USB‑C