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Apple Watch Series 12 (GPS) 42mm Aluminum Case with Olive Sport Band - S/M - Dark Bronze - (2026)

Model: MJEF4LS/A
SKU: 6572732
Sold byBest Buy

About this product

Apple Watch Series 12 is a more powerful health and fitness tracker. Better understand your body with the most accurate heart rate sensing in a wearable, with high-frequency HRV readings for insights on stress and recovery, hypertension notifications, cycle tracking, and sleep score. Stay motivated with readiness, advanced workout metrics and features like Pacer, Heart Rate Zones, and more. And now every day is more effortless with Siri AI and Audio Intelligence.

Features

  • STAY CLOSER TO YOUR HEART HEALTH—The most accurate heart rate sensing in a wearable,¹ Series 12 now measures HRV as often as every five minutes for insights on stress and recovery, and takes background heart rate readings every five second

  • A FULL-FEATURED HEALTH TRACKER—Better understand your body with invaluable health insights. View your overnight health metrics with the Vitals app⁷ and get a daily sleep score, track your menstrual cycle,⁶ and take readings of your blood oxygen.⁸

  • CHECK YOUR READINESS FOR THE DAY—Know when to rest or put yourself to the test. The readiness experience can help you determine your capacity to take on the day by analyzing your recent activity, vitals, and sleep.

  • A POWERFUL FITNESS TRACKER—With advanced metrics and motivating features like Pacer, Heart Rate Zones, and Workout Buddy powered by Apple Intelligence from your nearby iPhone²—Series 12 helps you stay active, from running to hiking to strength training.

  • KEEP HELP CLOSE AT HAND—A smartwatch that puts your safety first. Series 12 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.⁹

  • ENJOY ALL-DAY BATTERY LIFE—With up to 24 hours of normal use so you can do all the things you love for longer.¹⁰ And it only takes 15 minutes to fast-charge for up to 12 hours of normal use.¹¹

  • SIRI AI AND AUDIO INTELLIGENCE—Using just your voice, engage in natural, back-and-forth conversations, brainstorm ideas, and more with Siri AI.³ Audio Intelligence helps catch what you missed and summarize conversations with Live Rewind and Siri Recap.⁴ Siri AI is rolling out in English. Some Audio Intelligence features coming in beta late 2026. Usage limits may apply.

  • BUILT TO LAST—Apple Watch Series 12 aluminum cases now have Ceramic Shield 2—which is tougher than any smartwatch glass. Titanium and ceramic cases have a superdurable crack-resistant sapphire crystal display.

  • STAY CONNECTED—Series 12 (GPS) works with your iPhone or Wi-Fi to keep you connected. Use your smartwatch to send a text, take a call, listen to music, use Siri, and get notifications.

Specifications

  • Screen Size
    42 millimeters
    Operating System Compatibility
    Apple iOS
    Operating System
    watchOS
    Built-in Storage
    64 gigabytes
    Global Positioning
    GPS, Galileo, GLONASS, QZSS
    Metrics Measured
    Altitude changes, Blood oxygen, Resting heart rate, Skin temperature, Water temperature, Electrocardiography (ECG), Duration of sleep stages, Duration of exercise, Hours slept
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Reviews

Rating 4.9 out of 5 stars with 8 reviews

5 star rating. 7 reviews4 star rating. 1 review
100% would recommend to a friend

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 5 out of 5 stars

    nice coler

    very light wight and good batery life ...............................

    Posted by JatinbM

  • Rated 4 out of 5 stars

    Apple Watch 12

    Feels a lot lighter than the other series plus I can actively see it working to check my hear rate and measure my workouts

    Posted by ELIBETHR

  • Rated 5 out of 5 stars

    Massive improvement this year!!

    I love the Apple Watch 12. I have a couple of controlled yet worrisome heart conditions. I do a lot of walking and sometimes I worry about my heart rate going back into tachycardia. Previous generations of Apple Watch checked HR every few minutes. This year they finally have the ability to check your pulse every 5 seconds. That is huge. I also love the battery life as I get close to 48 hours without having to charge. The new bronze color is very cool, especially with the olive colored band. A++ to Apple for a job well done!!

    Posted by Mikeyt1818

  • Rated 5 out of 5 stars

    Loving the long battery life

    We got this watch because of the sensor updates and improved data for health tracking purposes. Battery life on this watch is significantly better than our Apple Watch 10 and only needing to recharge every other day!

    Posted by LHOCPhotoNovice

  • Rated 5 out of 5 stars

    Great Product for the Price

    The health tracking features are highly impressive. Super accurate heart, sleep, and activity tracking. That includes steps, elevation, even calorie burn.

    Posted by Julian

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