Apple Watch SE 3 MEH94LW/A, 40mm, Silicone Strap
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
- Heart rhythm alerts, Vitals app overnight metrics, sleep score and sleep apnoea notifications
- Tracks workouts from running to strength training, with Workout Buddy via a nearby iPhone
- Detects hard falls and severe car crashes and can contact emergency services
- Wrist temperature sensing for period logging, predictions and cycle deviation alerts
- 18-hour battery life, with up to 8 hours of charge in 15 minutes
- Always-on display and customisable faces, with GPS and Wi-Fi connectivity to your iPhone
Top Highlights
- Brand
- Apple Watch
- Model Name
- SE 3
- Model Number
- MEH94LW/A
- Department
- Unisex
- Item Type
- Smart Watch
- Manufacturer
- Apple
- First Available
- 8 September 2025
- Release Year
- 2025
Features & Specs
- Display
- Digital
- Case Material
- Aluminum
- Case Size
- 40 mm
- Weight
- 27.2 g
- Water Resistance
- 0 m
- Strap
- Silicone
- Dimensions
- 23.88 x 7.62 x 3.05 cm
Style
- Dial Shape
- Rectangle
- Band Color
- Midnight
Description
Apple Watch SE 3 is a 40mm GPS smartwatch built for people who want health and fitness tracking without a lot of complexity. It suits anyone using an iPhone who wants daily activity data, safety features and notifications on the wrist.
On the health side, it sends alerts for an irregular heart rhythm or an unusually high or low heart rate. The Vitals app shows overnight metrics, and the watch provides a sleep score and sleep apnoea notifications. Wrist temperature sensing supports period logging and cycle predictions.
The always-on display lets you read the time without raising your wrist. Battery life is rated at 18 hours, and charging is up to twice as fast as SE 2, giving up to 8 hours in 15 minutes. Fall detection and crash detection can connect you to emergency services.
Frequently Asked Questions
Can I wear the Apple Watch SE 3 for sleep tracking if the battery only lasts 18 hours?
Yes, it works if you plan your charging. The Apple Watch SE 3 is rated at 18 hours, and fast charging gives up to 8 hours in 15 minutes. Many people top up while getting ready in the morning, then wear it overnight for the sleep score and Vitals data.
Does it work without an iPhone nearby for daily use?
The SE 3 GPS model works with your iPhone or Wi-Fi to stay connected. It handles texts, calls, music, podcasts, Siri and notifications through that link. Workout Buddy needs a nearby iPhone, so for the full daily experience you should keep your phone close.
Is it suitable for sport and workouts like running or strength training?
It tracks workouts from running to strength training with real-time metrics, and the GPS model helps with outdoor sessions. Fall and crash detection add a safety layer during sport. For swim use, check the water resistance details on the product page before getting in the pool.
What does the 40mm size mean for my wrist?
The Apple Watch SE 3 comes in a 40mm case, which usually suits small to medium wrists well. The product measures 9.4 x 3 x 1.2 inches including the strap, and it weighs about 0.96 ounces. Straps come in many styles, so fit can be adjusted.
How does it compare with the SE 2 for charging?
The main difference is charging speed. Apple states SE 3 charges up to twice as fast as SE 2, giving up to 8 hours of battery in 15 minutes. It also adds features like sleep score and sleep apnoea notifications. Choose an alternative with longer battery life if you dislike daily charging.
Who is the Apple Watch SE 3 suitable for?
It suits iPhone users who want a smartwatch for health insights, fitness and safety. Heart rhythm alerts, fall detection and period tracking cover a wide range of needs. Servicing a smartwatch mostly means dealing with battery wear over time, so expect to charge it daily.
Editor's take
Apple Watch SE 3 sits in the entry tier of Apple's smartwatch line, a GPS model in a 40mm size for iPhone owners who want health tracking and notifications without moving up to a more expensive tier. Its pitch is less about horology and more about a daily wrist companion that handles activity, sleep and safety.
The feature that matters most is the sensor suite. The Vitals app summarises overnight metrics, while the wrist temperature sensor feeds sleep and cycle insights, and irregular heart rhythm alerts add a layer of passive monitoring. The always-on display is a real daily-use gain, since you can read the watch face without lifting your wrist.
The trade-off is endurance. An 18-hour battery life covers a day from sunup to sundown, but it means nightly or near-daily charging, which clashes with overnight sleep tracking unless you top up during the day. The fast charging helps, with up to 8 hours in 15 minutes, though a traditional watch with months of battery or a mechanical movement avoids the routine entirely.
It makes sense for iPhone users who want a capable fitness and safety watch with fall detection and a wide choice of straps. If you want a watch that lasts several days per charge or a piece with mechanical character, look at a solar quartz or automatic watch instead.
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