Apple Watch Series 12 (GPS + Cellular) 42mm Ceramic Case with Navy Blue Sport Band - M/L - Night Blue (AT&T) - (2026)
Model: MJH04LS/A
SKU: 6598053
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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.
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.
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.¹²
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