Apple Watch SE 3 40mm Midnight Aluminium Case GPS + Cellular Sport Band (M/L) [2025]

The Apple Watch SE 3 40mm Midnight Aluminium Case GPS + Cellular Sport Band (M/L) [2025] combines a compact design with powerful everyday connectivity, fitness features and smart functionality. Introduced in 2025, Apple Watch SE 3 features the S10 chip, a 40mm aluminium case and a range of health, safety and activity features designed for everyday use. Apple Watch SE 3 40mm Midnight Aluminium Case GPS + Cellular Sport Band (M/L) [2025]

The GPS + Cellular configuration adds mobile connectivity, allowing compatible users to make calls, send messages and access supported services when they are away from their iPhone, subject to carrier availability and an active cellular plan.

Apple Watch SE 3 40mm Midnight Aluminium Case GPS + Cellular Sport Band (M/L) [2025]

The 40mm case is designed for a compact, lightweight fit. Apple lists the 40mm model at 40mm high, 34mm wide and 10.7mm deep, with a GPS + Cellular weight of approximately https://www.jbhifi.com.au/ 26.4 grams. It is designed to fit wrists measuring approximately 130–200mm.

The Midnight aluminium finish provides a versatile appearance that works well for everyday wear, while the included Sport Band offers a practical option for workouts, commuting and daily activities.

Compact Retina Display

The watch features a 40mm Always-On Retina display using OLED and LTPO technology. The display provides a 324-by-394-pixel resolution, up to 1,000 nits peak brightness and 326 pixels per inch. Apple also specifies tough Ion-X front glass for added durability.

This compact screen provides access to notifications, workouts, apps, messages and other information directly from the wrist without requiring constant interaction with a smartphone.

S10 Chip and Everyday Performance

At the heart of the device is Apple’s S10 chip with a 64-bit dual-core processor and a four-core Neural Engine. The watch also includes 64GB of capacity.

This hardware supports everyday smartwatch functions, fitness tracking, communication and Apple’s supported intelligent features. Users can interact through the Digital Crown, side button, touchscreen and supported gestures.

GPS + Cellular Connectivity

The cellular version is designed for greater independence from an iPhone. With an eligible cellular plan and supported carrier, users can stay connected in more places, including making calls and sending messages without having their iPhone immediately nearby. Apple specifies support for LTE and 5G RedCap on supported models.

GPS is also built in, supporting location tracking for outdoor activities such as walking, running and cycling.

Health, Fitness and Safety Features

The SE 3 includes a second-generation optical heart sensor, temperature sensor, compass, always-on altimeter, accelerometer, gyroscope and ambient light sensor.

Health and wellness features include heart-rate notifications, sleep tracking, sleep stages, sleep score, cycle tracking and supported sleep-apnoea notifications. Safety functions include Emergency SOS, Fall Detection and Crash Detection.

These features make the watch useful for monitoring everyday activity and supporting safety while exercising or travelling.

Sport Band and Comfortable Everyday Wear

The Apple Watch SE 3 40mm Midnight Aluminium Case GPS + Cellular Sport Band (M/L) [2025] is designed for everyday comfort and convenient adjustment. Its simple design makes it suitable for workouts as well as casual use, while the compact 40mm case can be a practical choice for users who prefer a smaller watch profile.

The watch is also rated water resistant to 50 metres and described by Apple as swimproof, making it suitable for many everyday water-related activities.

Buy Apple Watch SE 3 40mm GPS + Cellular

For customers shopping for a compact Apple smartwatch, this configuration brings together GPS, cellular connectivity, health and fitness tracking, safety features and the S10 chip in a lightweight aluminium design.

Before purchasing, buyers should confirm cellular compatibility with their carrier, band sizing and whether the advertised product is new, refurbished or another condition. This is particularly important when comparing listings for 2025 models.

Legal
Apple Watch SE 3 requires iPhone 11 or later with iOS 26 or later.
[1]The Vitals app is for wellness purposes only and not for medical use.
[2]Fast charging is compatible with Apple Watch Series 7 and later, any Apple Watch Ultra model and Apple Watch SE 3.
[3]Battery life varies by use and configuration; see apple.com/au/watch/battery for more information.
[4]The temperature sensing feature is not intended for medical use. Temperature sensing is available only on Apple Watch Series 8 and later and all Apple Watch Ultra models.
[5]Sleep apnoea notifications are available on Apple Watch Series 9 and later, Ultra 2 and later, and SE 3. The feature is intended to detect signs of moderate to severe sleep apnoea for people aged 18 years or older without a diagnosis of sleep apnoea. Always follow directions for use. The feature is not intended for use in screening for, diagnosing, treating or managing sleep apnoea. Even without a notification, sleep apnoea may still be present. Consult a medical practitioner if you have symptoms of sleep apnoea, or any other breathing disturbance.
[6]Irregular rhythm notification requires the latest versions of watchOS and iOS. It is not intended for use by people under 22 years old or those who have been previously diagnosed with atrial fibrillation (AFib). Always follow directions for use. The device is not intended to replace traditional methods of diagnosis. Consult a doctor if atrial fibrillation is detected or if you have symptoms of a heart attack, stroke or other cardiovascular conditions.
[7]Testing conducted by Apple in July and August 2025 using preproduction Apple Watch SE 3 (GPS + Cellular) and Apple Watch SE 2 (GPS + Cellular), each paired with an iPhone; all devices tested with prerelease software, Apple Watch Magnetic Fast Charger to USB-C Cable (Model A2515) and Apple 20W USB-C Power Adapter (Model A2305). Charge time varies with adapter, region, settings, initial battery levels, usage and environmental factors; actual results will vary.
[8]Requires an Apple Intelligence–enabled iPhone nearby and Bluetooth® headphones with device and Siri language set to English. Apple Intelligence is available in beta. Some features may not be available in all regions or languages. For feature and language availability and system requirements, see support.apple.com/121115.
[9]Emergency SOS requires a mobile network connection or Wi-Fi calling with an internet connection from your Apple Watch or nearby iPhone. You can use cellular models of Apple Watch to make an emergency call in many locations, provided that a mobile network is available. Some mobile networks may not accept an emergency call from your Apple Watch if your Apple Watch isn’t activated, if isn’t compatible with or configured to operate on a particular mobile network, if it isn’t set up for mobile service or if the mobile network does not support emergency calling over IMS. See support.apple.com/108374 and apple.com/au/watch/cellular for more information.
[10] Not all features will be available if the Apple Watch is set up through Apple Watch For Your Kids. Check support.apple.com/109036 for details. Carrier plan required for cellular service. Check apple.com/au/watch/cellular for participating carriers and eligibility.
[11]Carrier plan required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. International roaming is not supported. Check apple.com/au/watch/cellular for participating carriers and eligibility. See support.apple.com/HT207578 for additional setup instructions. Contact Us