Apple Watch SE 3 MEH34LW/A, 40mm
Apple Watch SE 3 is a 40mm GPS smartwatch with an always-on display, sleep tracking, fall detection and 18-hour battery life.
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About this item
- Health insights: irregular heart rhythm alerts, Vitals app, sleep score and sleep apnea notifications
- Fitness tracking from running to strength training, with Workout Buddy powered by Apple Intelligence
- Fall and severe car crash detection connects you to emergency services and notifies your contacts
- Wrist temperature sensing for sleep, period logging and cycle deviation notifications
- 18-hour battery life, with up to 8 hours of charge in 15 minutes
- Always-on display shows the watch face without raising your wrist
Top Highlights
- Brand
- Apple Watch
- Model Name
- SE 3
- Model Number
- MEH34LW/A
- Department
- Unisex
- Item Type
- Smart Watch
- Manufacturer
- Apple
- First Available
- September 8, 2025
- Release Year
- 2025
Features & Specs
- Display
- Digital
- Case Material
- Aluminium
- Case Size
- 40 mm
- Weight
- 27.2 g
- Water Resistance
- 0 m
- Dimensions
- 9.4 x 3 x 1.2 inches
Style
- Dial Shape
- Rectangle
Description
Apple Watch SE 3 is the GPS 40mm model in Apple's smartwatch range, aimed at anyone who wants health, fitness and connectivity features on the wrist. It is sold as a unisex model and pairs with an iPhone.
The watch sends alerts for irregular heart rhythm and unusually high or low heart rate, and the Vitals app shows overnight health metrics. It also provides a sleep score, sleep apnea notifications and wrist temperature sensing during sleep, along with period logging and cycle deviation notifications.
A standout feature is the always-on display, which shows the watch face without raising your wrist. Battery life is rated at 18 hours, and fast charging gives up to 8 hours in 15 minutes. Fall and severe car crash detection can connect you to emergency services, and Check In can notify a loved one on arrival.
Frequently Asked Questions
Can I wear the Apple Watch SE 3 to sleep?
Yes, the SE 3 is designed for it. It tracks wrist temperature overnight, gives a sleep score and sends sleep apnea notifications. With an 18-hour battery life, you will want to charge it in the evening, and fast charging adds up to 8 hours in about 15 minutes.
Will it work without my iPhone nearby?
This GPS model uses your iPhone or Wi-Fi to stay connected for texts, calls and notifications. It still tracks workouts on its own, but features like Workout Buddy need a nearby iPhone, so the SE 3 is best treated as an iPhone companion.
Is it suitable for daily workouts and sport?
The SE 3 tracks running, strength training and daily step goals with real-time metrics. For a daily sport routine it is a capable choice, though the 18-hour battery means charging every day, ideally after a session or before bed.
How does it compare with the older SE 2?
The SE 3 adds an always-on display, sleep score, wrist temperature sensing and faster charging, up to twice as fast as the SE 2. If you value those features, the upgrade is meaningful; otherwise an SE 2 may still serve you well.
Will the 40mm size fit my wrist?
The 40mm case is a mid-size option that typically suits small to average wrists, and the band is swappable. Many people with larger wrists also wear it comfortably, so trying one on is the best test.
Does it handle emergencies and safety?
The SE 3 can detect a hard fall or severe car crash and connect you to emergency services while notifying your contacts. Check In also tells a loved one when you reach your destination, which suits solo commutes or runs.
Editor's take
Apple Watch SE 3 is the entry point to Apple's smartwatch line in its 40mm GPS configuration, built for iPhone owners who want health and fitness tracking without moving to a pricier tier. Released in September 2025, it carries forward the SE idea: core features, sensibly priced.
The feature that matters most day to day is the always-on display, which keeps the watch face visible without a wrist raise, something earlier SE models did not offer. Paired with wrist temperature sensing, a sleep score and the Vitals app, it gives a useful overnight picture, and fall detection adds a safety layer.
The trade-off is endurance. An 18-hour battery life covers a day but needs charging nightly, which conflicts with sleep tracking unless you top up in the evening. The GPS version also relies on your iPhone or Wi-Fi for connectivity, so it is less independent than a cellular model.
It suits iPhone users who want a capable, shareable health tracker. If you want multi-day battery or a traditional mechanical watch, look at a hybrid smartwatch or an automatic dress watch instead. Fast charging, up to 8 hours in 15 minutes, softens the battery limit.
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