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Apple Watch SE 3 (GPS + Cellular) 40mm Aluminum Case with Navy Blue Sport Band - S/M - Midnight - (2026)

Model: MJLG4LW/A
SKU: 6572983
Sold byBest Buy

About this product

Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials—all for a great value. Get advanced health tracking, including sleep score and advanced cycle tracking. Meet Siri AI, your wearable AI assistant. Track your daily Move, Exercise, and Stand goals with Activity rings. And enjoy all-day, 18-hour battery life.

Color

Midnight

Carrier

GPS + Cellular

Screen Size

40mm

Band Size

Small/Medium

Features

  • GET ESSENTIAL HEALTH INSIGHTS—Apple Watch SE 3 is an advanced health tracker. Temperature sensing⁵ enables insights in the Vitals app ¹ and Cycle Tracking app.² You can also track your sleep score, get sleep apnea notifications,⁶ and more.

  • A GREAT FITNESS TRACKER—SE 3 can track your workouts in a variety of ways—from running and strength training to achieving your 10K steps a day. Hit your goals with real-time metrics and Workout Buddy.⁷

  • KEEP HELP CLOSE AT HAND—A smartwatch that puts your safety first. SE 3 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.⁸

  • GREAT BATTERY LIFE AND FAST CHARGING—Enjoy a smartwatch with all-day, 18-hour battery life from sunup to sundown.⁴ Then charge up to twice as fast as SE 2 and get up to 8 hours of battery in just 15 minutes.⁹

  • MEET SIRI AI—Your AI assistant. More personal. More powerful. Got a question? Just ask Siri AI to help you find what you need. You can even get ideas for post-workout stretches, healthy recipes, or wellness tips—right on your smartwatch.³ Siri AI is rolling out in English. Usage limits may apply.

  • 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.¹¹

  • APPLE WATCH FOR YOUR KIDS—Set up Apple Watch For Your Kids, even if they don’t have their own iPhone.¹⁰ Parents get peace of mind knowing their kids can call, text, and share their location.

  • YOUR SMARTWATCH, YOUR WAY—Express yourself with dozens of easily customizable faces and a wide range of bands in different colors, styles, and materials.

Specifications

  • Screen Size
    40 millimeters
    Operating System Compatibility
    Apple iOS
    Operating System
    watchOS
    Carrier
    Unlocked
    Built-in Storage
    64 gigabytes
    Global Positioning
    Galileo, GLONASS, GPS
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Reviews

Rating 4.8 out of 5 stars with 53 reviews

5 star rating. 45 reviews4 star rating. 5 reviews3 star rating. 2 reviews1 star rating. 1 review
94% would recommend to a friend

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 4 out of 5 stars

    Definitely bigger than the Series 8

    I previously had the Series 8 and I didn’t think the 1mm size difference was going to be super crazy but I definitely noticed a difference. I do like it so far though!

    This review is from Apple Watch Series 12 (GPS + Cellular) 46mm Aluminum Case with Sand Sport Band - M/L - Light Gold - (2026)

    Posted by KoriM

  • Rated 5 out of 5 stars

    Great Product

    My first Apple Watch Fits nice, good battery life. I’d buy it again

    This review is from Apple Watch Series 12 (GPS + Cellular) 42mm Aluminum Case with Black Sport Band - S/M - Black - (2026)

    Posted by LUCASA

  • Rated 5 out of 5 stars

    Good upgrade

    I've been using the Apple Watch Series 12 46mm Titanium with the Natural Milanese Loop, and it has exceeded my expectations. The titanium case feels incredibly premium while remaining surprisingly lightweight and comfortable for all-day wear. The natural finish gives it a sophisticated look that works equally well in business settings and casual environments. The Natural Milanese Loop is one of the standout features. It's elegant, breathable, and highly adjustable, providing a perfect fit throughout the day. The magnetic closure feels secure and makes it easy to put on and remove. Performance is outstanding, with smooth navigation, excellent battery life, and the health and fitness features I rely on daily. The larger 46mm display is bright, sharp, and easy to read both indoors and outdoors. Overall, this is the perfect combination of luxury, functionality, and comfort. If you're looking for a premium smartwatch that looks as good as it performs, this model is absolutely worth it

    This review is from Apple Watch Series 12 (GPS + Cellular) 46mm Titanium Case with Natural Milanese Loop - S/M - Natural - (2026)

    Posted by KARLAL

  • Rated 5 out of 5 stars

    Love IT!!!

    I upgraded to the Apple Watch Series 12 from a Series 9. I am still getting acquainted with the newer health features on the Series 12, but so far love the always visible heart rate. I primarily use the watch the track my cardiovascular health. I'm just beginning a new exercise regimen and plan to use the watch for my fitnes tracking as well. The battery life is good so far lasting me more than 24 hours. I wear the watch all day and sleep with it on, then charge in under 30 minutes in the morning and I'm ready to go for another day. Before I upgraded, I considered an Oura ring for my health monitoring, but went with the Apple Watch as I can get the data in real time rather than having to wait for the data to be downloaded to the app for review. The bronze color is beautiful and a nice change from previous color options.

    This review is from Apple Watch Series 12 (GPS + Cellular) 46mm Aluminum Case with Dark Bronze Milanese Loop - S/M - Dark Bronze - (2026)

    Posted by StacyR

  • Rated 5 out of 5 stars

    Great Upgrade from the Apple Watch 11!

    I upgraded from the Apple Watch 11 to the 12 and am really happy I did! Two things I especially love are the continuous heart rate monitoring and the longer battery life. Both are noticeable improvements that make a difference in everyday use. Very happy with my purchase!

    This review is from Apple Watch Series 12 (GPS + Cellular) 46mm Aluminum Case with Black Sport Band - M/L - Black - (2026)

    Posted by TeamBradley

See all customer reviews

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Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials—all for a great value. Get advanced health tracking, including sleep score and advanced cycle tracking. Meet Siri AI, your wearable AI assistant. Track your daily Move, Exercise, and Stand goals with Activity rings. And enjoy all-day, 18-hour battery life.

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4.8(53)

Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials—all for a great value. Get advanced health tracking, including sleep score and advanced cycle tracking. Meet Siri AI, your wearable AI assistant. Track your daily Move, Exercise, and Stand goals with Activity rings. And enjoy all-day, 18-hour battery life.

Apple Watch SE 3 (GPS + Cellular) 40mm Aluminum Case with Navy Blue Sport Band - M/L - Midnight - (2026)
Apple Watch SE 3 (GPS + Cellular) 40mm Aluminum Case with Navy Blue Sport Band - M/L - Midnight - (2026)
4.8(53)

Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials—all for a great value. Get advanced health tracking, including sleep score and advanced cycle tracking. Meet Siri AI, your wearable AI assistant. Track your daily Move, Exercise, and Stand goals with Activity rings. And enjoy all-day, 18-hour battery life.

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