Apple Watch Series 12 MJE74LS/A, 42mm
Apple Watch Series 12 GPS is a 42mm smartwatch with HRV and heart rate sensing, fall detection, a fitness tracker and up to 24 hours of battery life.
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About this item
- Measures HRV every five minutes and takes background heart rate readings every five seconds
- Vitals app, daily sleep score, cycle tracking and blood oxygen readings
- Readiness feature weighs recent activity, vitals and sleep to guide rest or effort
- Pacer, Heart Rate Zones and Workout Buddy for running, hiking and strength training
- Fall and severe car crash detection with automatic emergency services connection
- Up to 24 hours of normal use, 15-minute fast charge gives up to 12 hours
Top Highlights
- Brand
- Apple Watch
- Model Name
- 12 GPS
- Model Number
- MJE74LS/A
- Department
- Unisex
- Item Type
- Smart Watch
- Manufacturer
- Apple
- First Available
- 8 September 2026
Features & Specs
- Display
- Digital
- Case Size
- 42 mm
- Weight
- 269 g
- Water Resistance
- 0 m
- Dimensions
- 24 x 7.7 x 3 cm
Style
- Dial Shape
- Rectangle
- Collection
- Apple Watch Series 12
Description
Apple Watch Series 12 GPS in the 42mm size is a smartwatch built around health and fitness tracking. It suits anyone who wants heart insights, sleep data and workout guidance on the wrist, paired with an iPhone.
The watch measures heart rate variability as often as every five minutes and takes background heart rate readings every five seconds. The Vitals app gives overnight metrics and a daily sleep score, and it can take blood oxygen readings and track the menstrual cycle. Aluminium cases use Ceramic Shield 2, while titanium and ceramic cases use a sapphire crystal display.
One standout is the safety side: the watch can detect a hard fall or severe car crash and connect you with emergency services. Battery life reaches up to 24 hours of normal use, and a 15-minute fast charge gives up to 12 hours. It also handles texts, calls, music and Siri over your iPhone or Wi-Fi.
Frequently Asked Questions
Can I wear the Series 12 for my daily runs and gym sessions?
Yes, the Apple Watch Series 12 GPS is built for it, with Pacer, Heart Rate Zones and Workout Buddy covering running, hiking and strength training. Heart rate is read in the background every five seconds. The 42mm case is a sensible daily sport size for most wrists.
How long does the battery last between charges?
The Series 12 gives up to 24 hours of normal use, so most people charge it daily. A 15-minute fast charge adds up to 12 hours, which is handy if you top up before bed to track sleep. Apple Watch battery life varies with use.
Does it work without my iPhone nearby?
The GPS model works with your iPhone or Wi-Fi to stay connected. You can send a text, take a call, play music, use Siri and get notifications that way. Some features, such as Workout Buddy, rely on a nearby iPhone with Apple Intelligence.
Will it fit a smaller wrist?
The 42mm size is the more compact option in the Series 12 range and suits many smaller to average wrists. As a service point, the display glass is Ceramic Shield 2 on aluminium cases, so everyday knocks are less of a worry for daily wear.
How does the aluminium case differ from titanium or ceramic?
Aluminium cases use Ceramic Shield 2, tougher than any smartwatch glass according to Apple. Titanium and ceramic cases move to a crack-resistant sapphire crystal display. The choice comes down to scratch behaviour, weight and budget versus a basic sport watch.
What happens if I fall while wearing it?
The Series 12 can detect a hard fall or severe car crash and help connect you with emergency services. It also notifies your emergency contacts. This works as a background safety feature, so no workout needs to be running.
Editor's take
For iPhone owners who want a health tracker more than a traditional timepiece, the Series 12 GPS in 42mm is the straightforward entry in Apple's current line. Its pitch rests on health sensing: HRV readings as often as every five minutes and background heart rate readings every five seconds.
The display is the other practical story. Aluminium cases carry Ceramic Shield 2, which Apple calls tougher than any smartwatch glass, while titanium and ceramic cases use a sapphire crystal display. Add fall and severe car crash detection, plus the Vitals app with a daily sleep score, and the safety and recovery tools are well covered.
The trade-off is battery. Up to 24 hours of normal use means nightly or near-nightly charging, which sits awkwardly with sleep tracking unless you top up during the day. The 15-minute fast charge for up to 12 hours softens that, but anyone wanting multi-day autonomy should look at other categories.
This suits runners, hikers and gym-goers who like Pacer, Heart Rate Zones and Workout Buddy features, and who already live in the Apple ecosystem. If you prefer a mechanical or solar watch you wear for years, a quartz or automatic piece in a similar price range is the better alternative.
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