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AppleSmartwatches
Apple Watch Ultra 4 GPS + Cellular 49mm Natural Titanium Case with Sand Trail Loop - S/M
5G RedCapMPN MJAJ4LS/A
- 49 mm
$805.28
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Overview
Apple Watch Ultra 4 GPS + Cellular in a 49mm Grade 5 Natural Titanium case with the Sand Trail Loop in S/M (MJAJ4LS/A). It connects over 5G (RedCap) and LTE, and adds satellite communications for Emergency SOS, Messages and Find My off the grid. Battery life is up to 50 hours of normal use or up to 45 hours of Max Extended Workout tracking. It is water resistant to 100m, rated IP6X for dust and tested to MIL-STD 810H.
- 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, 45 hours Max Extended Workout
- S11 chip with 4-core Neural Engine and 64GB capacity
- Health Sensing System with ECG, blood oxygen, temperature and high-frequency heart rate tracking
- Flat sapphire Always-On Retina display with 3000 nits peak brightness
- 100m water resistance, IP6X dust resistance, MIL-STD 810H tested, EN13319 dive to 40m
- Stay reachable on runs and field work over 5G (RedCap) or LTE, with international roaming
Apple Watch Ultra 4 is Apple's longest-lasting watch, built for runners, hikers, divers and field teams who need a capable device on the wrist. This configuration pairs the 49mm Grade 5 Natural Titanium case with the Sand Trail Loop in S/M. The GPS + Cellular model A3579 supports 5G (RedCap) and LTE with international roaming. Built-in satellite communications cover Emergency SOS, Messages and Find My when there is no cellular or Wi-Fi coverage.
The S11 chip has a 64-bit dual-core processor, a 4-core Neural Engine and 64GB of storage. It powers Audio Intelligence and Siri with Apple Intelligence. The all-new Health Sensing System combines a second-generation electrical heart sensor, an always-on optical heart sensor, blood oxygen and temperature sensors for higher-frequency heart monitoring. It supports the Readiness app, Vitals, ECG, sleep score, sleep apnea notifications and hypertension notifications.
For training and navigation, Ultra 4 uses precision dual-frequency GPS (GPS, Galileo, QZSS and BeiDou) and offers running power, cadence, Race Route, Pacer and automatic track detection. Hikers get offline maps with custom route creation, Backtrack and elevation alerts. Divers get recreational dives to 40m with a depth gauge and water temperature sensor. The flat sapphire Always-On Retina display reaches 3000 nits peak brightness and drops to 1 nit.
Battery life runs up to 50 hours in normal use, 84 hours in Low Power Mode and 45 hours of Max Extended Workout. Fast charging reaches up to 80% in about 45 minutes. The case is water resistant to 100m under ISO 22810:2010 and dust resistant to IP6X. It is also tested to MIL-STD 810H for altitude, temperature extremes, immersion, and shock and vibration. The watch works with iPhone 11 or later, including iPhone SE (2nd generation or later), running iOS 27 or later.
Ideal for
- Trail and road runners who want to train and stay reachable without carrying iPhone
- Hikers and backcountry workers needing offline maps, Backtrack and satellite Emergency SOS
- Recreational scuba divers and open-water swimmers diving to 40m
- Field-operations staff working in heat, cold, dust and wet conditions
- Health-focused users tracking heart rate, HRV, sleep and recovery
Specifications
Chip
- Capacity
- 64GB
- 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
- Details
- Three-microphone array with beamforming and wind noise mitigation; dual speakers; media playback; siren
Safety
- Details
- Satellite Emergency SOS, Messages and Find My; international emergency calling; siren; flashlight; Fall and Crash Detection; Backtrack; Check In
Display
- Type
- Always-On Retina display, wide-angle OLEDs, LTPO3
- Cover
- Flat sapphire crystal display
- Refresh
- 1Hz refresh (always-on)
- Night Mode
- Night Mode for Modular Ultra, Wayfinder and Orienteering faces
- Resolution
- 422 by 514 pixels, 326 ppi
- Peak Brightness
- 3000 nits peak
- Minimum Brightness
- 1 nit minimum
General
- MPN
- MJAJ4LS/A
- UPC
- 195951394473
- Brand
- Apple
- Color
- Natural/Sand
- Model
- Apple Watch Ultra 4
- Band Size
- S/M
- Connectivity
- GPS + Cellular (5G RedCap)
- Configuration
- Apple Watch Ultra 4 GPS + Cellular, 49mm Natural Titanium Case with Sand Trail Loop - S/M
Package
- IN The Box
- Apple Watch Ultra 4; Sand Trail Loop band; Magnetic Fast Charger to USB-C Cable (1m)
- 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 and wrist flick gestures; Siri powered by Apple Intelligence
Software
- Accessibility
- VoiceOver, Zoom, AssistiveTouch, RTT, Live Speech, Personal Voice, Live Listen, Sound Recognition and more
- Operating System
- watchOS
- Apple Intelligence
- Apple Intelligence and Siri AI
Durability
- Diving
- EN13319 recreational scuba to 40m (±1m accuracy)
- Mil Std
- Tested to MIL-STD 810H subsections
- Dust Resistance
- IP6X under IEC 60529
- Water Resistance
- 100m (swim, snorkel, scuba, high-speed water sports), ISO 22810:2010
Environment
- Energy
- 100% of manufacturing electricity from renewable sources
- Packaging
- 100% fiber-based packaging
- Recycled Content
- 45% recycled content, including 100% recycled titanium in the case and 100% recycled cobalt in the battery
Connectivity
- GPS
- Precision dual-frequency GPS (GPS, Galileo, QZSS, BeiDou)
- Wi-Fi
- Wi-Fi 4 (802.11n), 2.4GHz and 5GHz
- Other
- Apple Pay; GymKit
- Fdd LTE
- 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71
- Tdd LTE
- 38, 39, 40, 41, 53
- Bluetooth
- Bluetooth 5.3
- Fdd 5G NR
- n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71
- Tdd 5G NR
- n38, n40, n41, n53
- Cellular Model
- Model A3579
- Ultra Wideband
- Second-generation Ultra Wideband
- Cellular Extras
- Apple Watch For Your Kids support; international roaming
- Cellular Technology
- 5G (RedCap) and LTE
Compatibility
- Iphone
- iPhone 11 or later, incl. iPhone SE (2nd gen or later), iOS 27 or later
Size And Weight
- Depth
- 12mm
- Width
- 44mm
- Height
- 49mm
- Details
- 422 by 514 pixels; 1245 sq mm display area; fits 130–210mm wrists
- Weight Black
- 63.1 grams (black)
- Weight Natural
- 63.0 grams (natural)
Health And Wellness
- Details
- Readiness, Vitals, Blood Oxygen, ECG, Heart Rate, Cycle Tracking, Medications, Mindfulness, Noise and Sleep apps; high/low heart rate, irregular rhythm, sleep apnea and hypertension notifications; Recovery HRV; 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; antennas (GPS, cellular/satellite); side button; Digital Crown; depth gauge/water temperature sensor/altimeter
Workouts And Activity
- Diving
- Recreational dive to 40m, automatic launch at 1m, depth and duration, GPS entry/exit points, depth gauge, water temperature sensor
- Hiking
- Compass, 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, Bluetooth power meter support, FTP, Live Activity on iPhone, cadence, speed, power and 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
- Swimming
- Pool custom workouts with haptic cues, splits and auto sets, SWOLF, automatic stroke detection, water temperature, pace, distance and laps
- More Workouts
- Skiing, snowboarding, rowing, paddling, golf, HIIT, yoga, strength training, Pilates, wheelchair, multisport and more
Power And Battery Life
- Battery
- Built-in rechargeable lithium-ion battery
- Normal Use
- Up to 50 hours normal use
- Fast Charge
- Up to 80% in about 45 min; 15 min for up to 18 hr normal use; 5 min for up to 10 hr sleep tracking
- 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
- Max Extended Workout
- Up to 45 hours Max Extended Workout
Environmental Requirements
- Relative Humidity
- 5% to 90% noncondensing
- Operating Altitude
- –1600 ft to 29,500 ft (–500m to 9000m)
- Storage Temperature
- –4° to 113° F (–20° to 45° C)
- 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)
Questions buyers ask
Does this Apple Watch Ultra 4 support 5G?
Yes. The GPS + Cellular model A3579 supports 5G (RedCap) and LTE, with FDD and TDD 5G NR bands including n41, n66 and n71, plus international roaming.
What wrist size does the Sand Trail Loop S/M fit?
This configuration ships with the Sand Trail Loop in size S/M. Apple lists the Ultra 4 as fitting 130–210mm wrists across its band sizes.
How long does the battery last?
Up to 50 hours of normal use, up to 84 hours in Low Power Mode, and up to 45 hours of Max Extended Workout tracking. Fast charging reaches up to 80% in about 45 minutes.
Can I use it for scuba diving?
Yes. It is rated for recreational scuba diving to 40m under EN13319 and water resistant to 100m under ISO 22810:2010. It includes a depth gauge and water temperature sensor.
Which iPhone do I need?
iPhone 11 or later, including iPhone SE (2nd generation or later), running iOS 27 or later.
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