Apple Watch Series 12 GPS + Cellular 42mm Space Grey Aluminium Case with Navy Blue Sport Band - M/L MJFY4AF/A
Apple Watch Series 12 GPS + Cellular 42mm Space Grey Aluminium Case with Navy Blue Sport Band - M/L MJFY4AF/A is backordered and will ship as soon as it is back in stock.
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Apple Watch Series 12 GPS + Cellular 42mm Space Grey Aluminium Case with Navy Blue Sport Band - M/L MJFY4AF/A is backordered and will ship as soon as it is back in stock.
Description
Description
Apple Watch Series 12 GPS + Cellular 42mm Space Grey Aluminium Case with Navy Blue Sport Band - M/L MJFY4AF/A
The Apple Watch Series 12 GPS + Cellular combines everyday connectivity, activity tracking and sleep insights in a 42 mm Space Grey aluminium case. This configuration includes a Navy Blue Sport Band in M/L, fitting wrists measuring 150–200 mm.
Key Features
- Always-On Retina OLED display with up to 2000 nits peak brightness.
- S11 chip with a dual-core processor and 4-core Neural Engine.
- GPS and cellular connectivity for supported calls, messages and apps.
- Workout tracking, sleep stages and sleep score.
- Up to 24 hours of normal use or 38 hours in Low Power Mode.
- Fast charging reaches up to 80% in approximately 30 minutes.
- 50 m water-resistance rating and IP6X dust resistance.

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 into 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, Series 12 now measures HRV as often as every five minutes for insights into stress and recovery, and takes background heart rate readings every five seconds.
A FULL-FEATURED HEALTH TRACKER — Better understand your body with invaluable health insights. View your overnight health metrics with the Vitals app and get a daily sleep score, track your menstrual cycle and take readings of your blood oxygen.
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 analysing 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 iPhone — 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 serious car crash, automatically help connect you with emergency services and notify your emergency contacts.
ENJOY ALL DAY BATTERY LIFE — With up to 24 hours of normal use so you can do all the things you love for longer. And it only takes 15 minutes to fast charge for up to 12 hours of normal use.
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 summarise conversations with Live Rewind and Siri Recap. 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 aluminium cases now have Ceramic Shield 2 — which is tougher than any smartwatch glass. Titanium and ceramic cases have a super-durable 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.

Technical Specifications
| Specification | Details |
|---|---|
| Product | Apple Watch Series 12 GPS + Cellular |
| Part Number | MJFY4AF/A |
| Case Size | 42 mm |
| Case Material / Colour | Aluminium / Space Grey |
| Band | Navy Blue Sport Band, M/L |
| Wrist Fit | 150–200 mm |
| Display | Always-On Retina, wide-angle LTPO3 OLED |
| Display Resolution | 374 × 446 pixels, 326 ppi |
| Display Brightness | Up to 2000 nits; minimum 1 nit |
| Display Protection | Ceramic Shield 2 |
| Processor | S11, 64-bit dual-core; 4-core Neural Engine |
| Storage | 64 GB |
| Operating System | watchOS |
| Wireless Connectivity | Cellular, Wi-Fi 4 (2.4/5 GHz), Bluetooth 5.3 and second-generation Ultra Wideband |
| Positioning | L1 GPS, GLONASS, Galileo, QZSS and BeiDou |
| Battery | Rechargeable lithium-ion; up to 24 hours normal use or 38 hours in Low Power Mode |
| Water / Dust Resistance | 50 m under ISO 22810:2010 / IP6X |
| Case Dimensions (H × W × D) | 42 × 37 × 9.7 mm |
| Case Weight | 31.5 g |
| iPhone Compatibility | iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later |
Cellular connectivity requires a supported carrier and eligible service plan. Features vary by region. Battery life and charging times depend on use and charging equipment.
What's in the Box
- Apple Watch Series 12, 42 mm Space Grey aluminium case
- Navy Blue Sport Band, M/L
- Apple Watch Magnetic Fast Charger to USB-C Cable, 1 m
Add this Apple Watch Series 12 configuration to your cart for connected everyday activity.
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