Apple

Apple MX4P3LW/A Watch Ultra 2 49mm Smartwatch GPS + Cellular

4.7 (1169 reviews)
MIL-STD

Apple's toughest smartwatch combines a 49mm titanium build, precision dual-frequency GPS, and 36-hour battery life for serious athletes and adventurers.

$719.00*$799.00Save 10%
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Apple Watch Ultra 2 (MX4P3LW/A) is Apple's flagship wearable, purpose-built for athletes, outdoor enthusiasts, and anyone who demands the most from a smartwatch. Housed in a 49mm corrosion-resistant titanium case with a sapphire front crystal, it is tested to MIL-STD 810H military standards and rated for 100m water resistance. The Always-On Retina display reaches up to 3000 nits of brightness, ensuring readability in direct sunlight on the trail or underwater. A customizable Action button and oversized Digital Crown give quick, glove-friendly access to key functions.

Beyond its durability, the Ultra 2 is packed with sport and health intelligence. Runners benefit from automatic track detection and advanced running form metrics, cyclists can connect Bluetooth power meters for FTP and cadence data, hikers get offline maps and a full-featured compass with Backtrack navigation, and swimmers and divers gain stroke detection, lap tracking, and full dive computer capabilities via the Oceanic+ app. Health monitoring is equally comprehensive, covering ECG, blood oxygen, irregular heart rhythm alerts, sleep apnea detection, and overnight health metrics. Safety features — including fall detection, car crash detection, and an emergency siren — round out a watch that is as protective as it is powerful. With 64 GB of storage, GPS + Cellular connectivity, and up to 36 hours of battery life, it is designed to go the distance.

Key Features

WHY APPLE WATCH ULTRA 2 — Meet the ultimate sports and adventure watch. Advanced features for runners, cyclists, swimmers, hikers, divers, and more. Rugged titanium case, now available in satin black. Superbright Always-On Retina display. Incredibly accurate precision dual-frequency GPS.* Powerful health, safety, and connectivity features.* And up to 36 hours of battery life for normal use and 72 hours in Low Power Mode.*

EXTREMELY RUGGED, INCREDIBLY CAPABLE — 49mm corrosion-resistant titanium case. Sapphire front crystal. Large Digital Crown and customizable Action button for instant control over a variety of functions. Tested to MIL-STD 810H.* Water resistance 100m.*

THE FREEDOM OF CELLULAR — With a cellular service plan you can call and text without your iPhone nearby.* Stream your favorite music and podcasts. Get directions with Maps.

MAXIMIZE YOUR TRAINING — Advanced metrics, views, and experiences in the Workout app, including Heart Rate Zones, custom workouts, and training load, which can provide insights into the impact your workouts have on your body over time.

FOR RUNNERS — Precision dual-frequency GPS for incredible accuracy.* Automatic track detection. Advanced running form metrics to help understand how efficiently you run. Customizable workouts that can include warmups, recovery intervals, and time to cool down.

FOR CYCLISTS — Powerful metrics take your cycling to the next level. See your speed, heart rate, and elevation in workout views. Start a cycling workout from your watch and it will automatically appear as a Live Activity on your iPhone, making it easier to see. Connect directly to Bluetooth accessories like power meters so you can see Functional Threshold Power and cadence.

FOR HIKERS — Offline maps let you navigate with just your Apple Watch. And the Compass app is packed with essential navigation tools like current heading, elevation, longitude, and latitude. Find the last place where you had cellular reception. Mark your location with Compass Waypoints. Use Backtrack to map where you’ve been and retrace your steps.

FOR SWIMMERS AND DIVERS - Automatic stroke detection, lap count, splits, sets, and Custom Workouts for pool swimmers. Open water swimmers can view a route map in their workout summary. Full dive computer capabilities with the Oceanic+ app.* Senses depth to 40 meters along with water temperature. Certified EN13319. See tide conditions for shorelines around the world with the Tides app.

ADVANCED HEALTH AND SAFETY FEATURES — Take an ECG.* Use the Blood Oxygen app.* Get notifications for irregular heart rhythm.* See overnight health metrics. Track sleep and get notifications if Apple Watch detects signs of sleep apnea.* Connect automatically to emergency services in the event of a hard fall or a severe car crash. And call for emergency help or activate a siren with the press of a button.*

* LEGAL DISCLAIMERS — This is a summary of the main product features. See below to learn more. Blood Oxygen: Blood Oxygen app is for wellness purposes only and not for medical use. Measurements are calculated and viewed on iPhone in the Health app. Requires the latest watchOS and iOS software.

Specifications

Brand
Apple
Model
MX4P3LW/A
Case Size
49mm
Case Material
Black Titanium
Band
Black Ocean Band
Connectivity
GPS + Cellular
Display
Always-On Retina, up to 3000 nits
Battery Life
Up to 36 hours (normal), 72 hours (Low Power Mode)
Water Resistance
100m
Storage
64 GB
Health Features
ECG, Blood Oxygen, Sleep Tracking, Sleep Apnea Detection
Safety Features
Fall Detection, Car Crash Detection, Emergency SOS, Siren
Durability Standard
MIL-STD 810H
Dive Certification
EN13319

Pros & Cons

👍 Pros

  • Extremely rugged titanium construction tested to MIL-STD 810H withstands harsh environments
  • Precision dual-frequency GPS provides highly accurate location tracking for outdoor activities
  • Cellular connectivity allows calls, texts, and streaming without carrying an iPhone
  • Comprehensive health suite includes ECG, blood oxygen, sleep apnea detection, and fall detection
  • Extended 36-hour battery life with a 72-hour Low Power Mode option

👎 Cons

  • Large 49mm case size may feel bulky on smaller wrists
  • Requires an iPhone for setup and full functionality — not compatible with Android
  • Premium price point significantly higher than standard Apple Watch models
  • Cellular service plan adds an ongoing monthly cost beyond the purchase price

Frequently Asked Questions

Yes, initial setup requires an iPhone. However, with a cellular plan activated, the watch can make calls, send texts, stream music, and get directions independently of your iPhone.
It is water-resistant to 100 meters and certified to EN13319 for diving. With the Oceanic+ app, it functions as a full dive computer sensing depth up to 40 meters.
It provides up to 36 hours of battery life under normal use and up to 72 hours in Low Power Mode.
It offers ECG readings, blood oxygen monitoring, irregular heart rhythm notifications, overnight health metrics, sleep tracking, and sleep apnea detection notifications.
This model uses a corrosion-resistant titanium case in satin black, paired with a Black Ocean Band.