5G
1 / 2
AppleSmartwatches
Apple Watch Ultra 4 GPS + Cellular 49mm Natural Titanium Case with Desert Alpine Loop - Medium
5G RedCapMPN MJAF4LS/A
- 49 mm
$805.28
In stock · only 3 leftShips from the US
- 30-day returns on unopened devices
- Secure checkout · pay by card
- Data plans with no contract · cancel anytime
Compare all 10 configurations
Datasheets & documents
Overview
Apple Watch Ultra 4 GPS + Cellular (MJAF4LS/A) combines a 49mm Grade 5 Natural Titanium case with a Desert Alpine Loop in Medium. It has 5G RedCap and LTE connectivity, satellite Emergency SOS, Messages and Find My, and up to 50 hours of normal use. It is water resistant to 100m, rated IP6X and tested to MIL-STD 810H. It is a capable wrist device for field teams, outdoor professionals and endurance athletes.
- 5G RedCap and LTE cellular (model A3579) with international roaming
- Satellite communications for Emergency SOS, Messages and Find My
- Up to 50 hours normal use, 84 hours Low Power Mode and 45 hours Max Extended Workout
- Health Sensing System with electrical and optical heart sensors, blood oxygen and temperature sensing
- Precision dual-frequency GPS (GPS, Galileo, QZSS, BeiDou)
- 49mm Grade 5 titanium case, 100m water resistance, IP6X, EN13319 dive rating to 40m, MIL-STD 810H tested
- Always-On Retina display with flat sapphire crystal and 3000 nits peak brightness
- Take calls, send messages and use data over 5G RedCap or LTE while your iPhone stays behind
Apple Watch Ultra 4 GPS + Cellular is Apple's toughest, longest-running smartwatch. This configuration, part number MJAF4LS/A, pairs a 49mm Natural Grade 5 titanium case with a Desert Alpine Loop in size Medium. It is designed for people who spend long days outdoors or on the move. That includes field-operations leads, site staff, guides, runners and divers who need to stay connected and safe without carrying a phone.
Cellular connectivity uses a 5G RedCap and LTE modem (model A3579) with wide FDD and TDD band coverage and international roaming. Where there is no cellular or Wi-Fi signal, built-in satellite communications provide Emergency SOS, Messages and Find My. Fall Detection, Crash Detection, Check In, Backtrack and a built-in siren add further protection. Precision dual-frequency GPS (GPS, Galileo, QZSS and BeiDou) supports offline maps with custom routes, waypoints and accurate workout tracks.
Apple rates the battery at up to 50 hours of normal use, 84 hours in Low Power Mode and 45 hours in Max Extended Workout. Fifteen minutes of fast charging provides up to 18 hours of normal use. Inside is the S11 chip with a 4-core Neural Engine and 64GB of storage. The Always-On Retina display sits under flat sapphire crystal and ranges from 3000 nits peak down to 1 nit.
The Health Sensing System adds a second-generation electrical heart sensor, an always-on optical heart sensor, blood oxygen and temperature sensing. These support the Readiness app, Vitals, ECG, Recovery HRV, sleep scoring and hypertension notifications. The watch is water resistant to 100m under ISO 22810:2010 and certified to EN13319 for recreational diving to 40m. It pairs with iPhone 11 or later on iOS 27 or later.
Ideal for
- Field and site teams who need to stay reachable without carrying a phone
- Off-grid work, expeditions and travel using satellite Emergency SOS, Messages and Find My
- Marathon, trail and multisport training with dual-frequency GPS and Running Power
- Backcountry navigation with offline maps, custom routes and Backtrack
- Recreational scuba diving to 40m, snorkeling and high-speed water sports
Specifications
Chip
- Capacity
- 64GB capacity
- Processor
- S11 chip with 64-bit dual-core processor
- Neural Engine
- 4-core Neural Engine
- Audio Intelligence
- Live Rewind, Siri Recap, Shazam, Sound Recognition
Audio
- Siren
- Siren
- Speakers
- Dual speakers
- Microphones
- Three-microphone array with beamforming and wind noise mitigation
- Media Playback
- Media playback
Safety
- Details
- Satellite Emergency SOS, Messages and Find My; Emergency SOS; international emergency calling; siren; flashlight; Fall Detection; Crash Detection; Last Emergency Call Availability Waypoint; noise monitoring; Backtrack; Check In
Display
- Type
- Always-On Retina display with wide-angle OLEDs and LTPO3
- Cover
- Flat sapphire crystal display
- Refresh
- 1Hz refresh
- Night Mode
- Night Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering)
- Active Area
- 422 by 514 pixels
- Pixel Density
- 326 pixels per inch
- Peak Brightness
- 3000 nits peak brightness
- Minimum Brightness
- 1 nit minimum brightness
General
- MPN
- MJAF4LS/A
- UPC
- 195951394459
- Brand
- Apple
- Model
- Apple Watch Ultra 4
- Cellular Generation
- 5G (RedCap) and LTE
Package
- Shipping Weight
- 0.90 lb
Sensors
- Details
- Health Sensing System (second-generation electrical heart sensor, always-on optical heart sensor, blood oxygen sensor, temperature sensor), depth gauge, water temperature sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor
Controls
- Details
- Customizable Action button, Digital Crown with haptic feedback, side button, single tap/double tap/wrist flick gestures, Siri powered by Apple Intelligence
Durability
- Mil Std
- altitude, high/low temperature, temperature shock, immersion, freeze/thaw, ice and freezing rain, shock and vibration
- Dive Rating
- EN13319 recreational scuba diving to 40m (±1m accuracy)
- Dust Resistance
- Dust resistance IP6X under IEC 60529
- Water Resistance
- Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO 22810:2010
IN The Box
- Contents
- Apple Watch Ultra 4, band, Apple Watch Magnetic Fast Charger to USB-C Cable (1m)
Environment
- Waste
- no final assembly waste to landfill
- Energy
- 100% renewable manufacturing electricity; customer energy use matched with renewable electricity
- Packaging
- 100% fiber-based packaging
- Apple 2030
- Apple 2030 carbon-neutral goal
- Recycled Content
- 45% recycled content
- Smarter Chemistry
- Covered by Apple's Regulated Substances Specification
- Recycled Materials
- 100% recycled cobalt (battery), copper wire and tungsten (Taptic Engine), gold plating and tin solder (Apple PCBs), titanium (case); 95% recycled lithium (battery); 80% recycled steel (battery enclosure, Taptic Engine)
- Environmental Report
- Apple Watch Ultra 4 Product Environmental Report
Connectivity
- GPS
- Precision dual-frequency GPS (GPS, Galileo, QZSS, and BeiDou)
- Wi-Fi
- Wi-Fi 4 (802.11n), 2.4GHz and 5GHz networks
- Gymkit
- GymKit
- Apple Pay
- Apple Pay
- Bluetooth
- Bluetooth 5.3
- NR Fdd Bands
- FDD-5G NR: n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71
- NR Tdd Bands
- TDD-5G NR: n38, n40, n41, n53
- LTE Fdd Bands
- FDD-LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71
- LTE Tdd Bands
- TDD-LTE: 38, 39, 40, 41, 53
- Cellular Model
- Model A3579
- Ultra Wideband
- Second-generation Ultra Wideband chip
- Cellular Technology
- Supports RedCap for 5G and LTE
- International Roaming
- International roaming
- Apple Watch For Your Kids
- Support for Apple Watch For Your Kids
Accessibility
- Details
- Built-in features for vision, mobility, hearing and cognitive disabilities
- Features
- 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, Audio Volume Balance, Audio Transcription, Live Speech, Accessibility Shortcut, Mono Audio, Taptic Time, Personal Voice, Live Listen, Sound Recognition
Compatibility
- Iphone
- iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later
Size And Weight
- Depth
- 12 mm
- Width
- 44 mm
- Height
- 49 mm
- Wrist Fit
- Fits 130–210mm wrists
- Display Area
- 1245 sq mm display area
- Weight Black
- 63.1 grams (black)
- Weight Natural
- 63.0 grams (natural)
- Display Resolution
- 422 by 514 pixels
Operating System
- OS
- watchOS
This Configuration
- Color
- Natural/Desert
- Band Size
- Medium
- Connectivity
- GPS + Cellular
- Apple Part Number
- MJAF4LS/A
- Configuration Name
- Apple Watch Ultra 4 GPS + Cellular, 49mm Natural Titanium Case with Desert Alpine Loop - Medium
Health And Wellness
- Details
- Readiness, Vitals, Blood Oxygen, ECG, Heart Rate, Recovery HRV, irregular rhythm, high/low heart rate, sleep apnea and hypertension notifications, Cycle Tracking, Medications, Mindfulness, Noise, Sleep with stages and sleep score
Material And Finish
- Titanium Case Grade 5
- Grade 5 titanium case: Natural; Black
Hardware And Buttons
- Details
- Microphone, speaker, Health Sensing System, customizable Action button, siren/speaker, GPS and cellular/satellite antennas, side button, Digital Crown, depth gauge/water temperature sensor/altimeter
Workouts And Activity
- Diving
- Recreational dive to 40m, dive computer app (App Store), automatic launch at 1m, depth and duration, GPS entry/exit points, depth gauge, water temperature sensor
- Hiking
- Compass with bearing/incline/elevation/coordinates, custom and automatic waypoints, Backtrack, offline maps with custom routes, elevation alerts, U.S. park topographic maps and curated hikes, siren
- Cycling
- Custom workouts, Training Load, speed/elevation/distance, Bluetooth power meter support, FTP, Live Activity on iPhone, Heart Rate Zones, cadence/speed/power/power zones
- Running
- Custom workouts, Training Load, Heart Rate Zones, VO2 max, Race Route, Pacer, Precision Start, running form metrics and Running Power, automatic track detection, multisport, alerts
- Swimming
- Pool custom workouts with haptic cues, pool and open water views, splits and auto sets, SWOLF, stroke detection, water temperature, pace/distance/heart rate/laps
- More Workouts
- Skiing, snowboarding, rowing, paddling, golf, walk, elliptical, stair stepper, HIIT, yoga, strength, dance, core, Pilates, Tai Chi, wheelchair, kickboxing, multisport and more
Power And Battery Life
- Normal Use
- Multiday battery life, up to 50 hours of normal use
- Fast Charge
- up to 80% in about 45 minutes
- Battery Type
- Built-in rechargeable lithium-ion battery
- Low Power Mode
- Up to 84 hours in Low Power Mode
- Outdoor Workout
- Up to 18 hours outdoor workout
- Extended Workout
- Up to 25 hours Extended Workout
- Fast Charge 5 Min
- 5 minutes for up to 10 hours of sleep tracking
- Fast Charge 15 Min
- 15 minutes for up to 18 hours of normal use
- Max Extended Workout
- Up to 45 hours Max Extended Workout
Environmental Requirements
- Relative Humidity
- 5% to 90% noncondensing
- Operating Altitude
- –1600 feet to 29,500 feet (–500m to 9000m)
- Operating Temperature
- 32° to 95° F (0° to 35° C)
- Dive Operating Temperature
- 32° to 104° F (0° to 40° C)
- ON Wrist Operating Temperature
- –4° to 130° F (–20° to 55° C)
- Non Operating Storage Temperature
- –4° to 113° F (–20° to 45° C)
Apple Intelligence And Siri AI
- Details
- Apple Intelligence with Siri AI (rolling out in English)
Questions buyers ask
Is this Apple Watch Ultra 4 a 5G model?
Yes. The GPS + Cellular model A3579 supports 5G (RedCap) and LTE on the bands listed in the specifications, with international roaming.
Can I use it without my iPhone nearby?
Yes. With cellular connectivity you can make calls, send messages and use features such as Workout Buddy while your iPhone stays at home. Satellite communications add Emergency SOS, Messages and Find My outside cellular coverage.
Which band size comes with MJAF4LS/A?
This configuration includes the Desert Alpine Loop in size Medium.
Can it be used for scuba diving?
Yes. It is certified to EN13319 for recreational scuba diving to 40m. It is water resistant to 100m under ISO 22810:2010 and includes a depth gauge and water temperature sensor.
Which iPhone models are compatible?
It works with iPhone 11 or later, including iPhone SE (2nd generation or later), running iOS 27 or later.
More Smartwatches
5G
Samsung
Samsung Galaxy Watch Ultra (2025) 47mm LTE Smartwatch in Titanium White (SM-L705UAW1XAA)
$694.42
In stock
5G
