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Overview

Apple Watch Ultra 4 is the ultimate running and sports watch with multi-day battery life, game-changing health and fitness tracking, and high-frequency HRV readings for insights on stress, recovery and your readiness to take on the day.

Apple Watch Ultra 4 (GPS + Cellular) 49mm Black Titanium Case with Burgundy Trail Loop - Small / Medium

Brand: Apple
Model: MJC34CL/A
Web Code: 20154689
Sold and shipped by Best Buy

Band Size: Small / Medium

Small / Medium

Band Colour: Burgundy

Band Colour Burgundy
Band Colour Burgundy

Burgundy

Not available for deliverySold out online

Release Date: 18 septembre 2026

Not available for pickup

Not available for pickup

Sorry, at this time, this product cannot be picked up in-store.

Return Policy

30 days to return or exchange

Read return policy

Manufacturer's Warranty

Check with the manufacturer for details or add Best Buy Protection for extra coverage.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

  • Multi-day battery life—Ultra 4 is a smartwatch with ultramarathon battery stamina, perfect for runners to go the distance—with up to 45 hours of Max Extended Workout tracking. And you can fast-charge in just 15 minutes for up to 18 hours of use
  • Stay closer to your heart health—The most accurate heart rate sensing in a wearable, Ultra 4 now measures HRV as often as every five minutes for insights on stress and recovery, and background heart rate readings every five seconds
  • A full-featured health tracker—Better understand your body with advanced health insights. View your overnight health metrics with the Vitals app and get a daily sleep score,3 track your menstrual cycle4 and take readings of your blood oxygen5
  • Check your readiness for the day—Know when to rest or put yourself to the test. The readiness experience gives you one clear score and can help you determine your capacity to take on the day by analyzing your recent activity, vitals and sleep
  • Ultimate running and workout companion—A superior fitness tracker for distance running, triathlons, mountain biking, strength training and more. Ultra 4 has precision dual-frequency GPS, Pacer, Heart Rate Zones, Custom Workouts, training load and more
  • Keep help close at hand—A smartwatch that puts your safety first. Ultra 4 can detect a hard fall or severe car crash.6 If you don’t have cell service or Wi-Fi, built-in satellite communications let you text emergency services to get help7
  • Siri AI and audio intelligence—Using just your voice, engage in natural, back-and-forth conversations, brainstorm ideas and more with Siri AI. Audio Intelligence helps catch what you missed and summarize conversations with Live Rewind and Siri Recap.2 Siri AI is rolling out in English. Some Audio Intelligence features coming in beta in English late 2026. Usage limits may apply
  • Rugged and ready to go—Ultra 4 is built for extreme environments with a tough titanium case and a strong sapphire crystal display. Water-resistant up to 100m, this smartwatch is great for swimmers, divers and fans of high-speed water sports
  • The freedom of cellular—With just your smartwatch, you can take and make calls, stream music and podcasts, and listen with your AirPods—even without your iPhone (wireless service plan required for cellular service)

Apple Watch Ultra 4 requires iPhone 11 or later with iOS 27 or later.

1 Apple Intelligence is available with Siri and device language set to Chinese (Simplified), Chinese (Traditional), Danish, Dutch, English, French, German, Italian, Japanese, Korean, Norwegian, Portuguese, Spanish, Swedish, Turkish or Vietnamese. Some features may not be available in all regions or languages. Some devices may not be available in all regions. Siri AI is available in beta in watchOS 27 and requires an Apple Intelligence–enabled device set to a supported language. Available in English to start. French language support coming late 2026. Certain Apple Intelligence features that rely on server-side models are subject to daily usage limits, including but not limited to Siri AI. Daily limits may vary by feature, request complexity, system demand, system policies and other factors. Expanded access to such features will be available for a fee in the future. Use of these features is subject to the Apple Intelligence Terms and Conditions.

2 Audio Intelligence includes Live Rewind, Siri Recap, Sound Recognition and faster Shazam, and requires Apple Watch Series 12 or Apple Watch Ultra 4. Live Rewind and Siri Recap will be available in beta in late 2026 and require an Apple Intelligence–enabled iPhone 16 or later (excluding iPhone 16e). Will be available in English to start. Certain Audio Intelligence features that rely on server-side models are subject to daily usage limits, including but not limited to Live Rewind and Siri Recap.

3 The Vitals app is for wellness purposes only and not for medical use.

4 The Cycle Tracking app should not be used for birth control or to diagnose a health condition. Cycle deviation notifications inclusive of perimenopause are for people 40 years old or older.

5 The Blood Oxygen app is for wellness purposes only and not for medical use. Measurements are calculated and viewed on iPhone in the Health app. The Blood Oxygen app is available on Apple Watch Series 6 and later (excluding Apple Watch SE models) and all Apple Watch Ultra models.

6 Emergency SOS requires a satellite connection, cellular connection, or Wi-Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that cellular service is available. Some cellular networks may not accept an emergency call from your Apple Watch if your Apple Watch isn’t activated, if it isn’t compatible with or configured to operate on a particular cellular network, if it isn’t set up for cellular service or if the cellular network does not support emergency calling over IMS.

7 Emergency SOS, Find My and Messages via satellite are included for free for two years with the activation of Apple Watch Ultra 3 or later. Connection and response times vary based on location, site conditions and other factors. Find My and Messages via satellite require a carrier plan. To send and receive SMS from cellular models of Apple Watch over satellite, your paired iPhone must be powered on and connected to Wi-Fi or an active cellular network, but your iPhone doesn’t need to be nearby. SMS message rates may apply.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.