Description
Apple Watch SE 3 is Apple’s entry-level smartwatch, powered by the S10 chip with an Always-On Retina OLED display up to 1,000 nits. The GPS + Cellular model supports 5G (RedCap) and LTE, so it can make calls and stream without an iPhone nearby. It includes a second-generation optical heart sensor, temperature sensing, sleep score and sleep apnoea notifications, is water resistant to 50m and offers up to 18 hours of battery life (32 hours in Low Power Mode) with fast charging.
International version – please read
- This is an international model, not the UK version. Works with UK networks that support Apple Watch cellular (eSIM).
Specifications
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| Model | MJLJ4 (GPS + Cellular, 40mm) |
| Case material | Aluminium (100% recycled) |
| Case size | 40 x 34 x 10.7 mm |
| Weight | 26.4g (GPS + Cellular, case only) |
| Display | Always-On Retina, OLED, LTPO, 324 x 394 pixels, 759 sq mm, 326ppi |
| Brightness | Up to 1,000 nits; 2 nits minimum |
| Front glass | Ion-X glass (4x crack resistance vs. previous) |
| Chip | S10 SiP, 64-bit dual-core, 4-core Neural Engine |
| Storage | 64GB |
| Sensors | 2nd-gen optical heart sensor, temperature sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor |
| Health features | Heart rate notifications, irregular rhythm notifications, sleep stages, sleep score, sleep apnoea notifications, cycle tracking |
| Safety | Emergency SOS, Fall Detection, Crash Detection |
| Cellular | 5G (RedCap) and LTE; eSIM |
| 5G bands | FDD n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71; TDD n38, n40, n41 |
| Wi-Fi / Bluetooth | Wi-Fi 4 (802.11n) 2.4GHz; Bluetooth 5.3 |
| GPS | L1 GPS, GLONASS, Galileo, QZSS, BeiDou |
| Apple Pay | Yes (NFC) |
| Battery life | Up to 18 hours; up to 32 hours Low Power Mode |
| Charging | Fast charge: about 80% in 45 min; 15 min for up to 8 hours use |
| Water resistance | 50m (swimproof) |
| Strap fit | 40mm case fits 130-200mm wrists (S/M and M/L); this unit has M/L strap |
| Compatibility | iPhone 11 or later / iPhone SE (2nd gen or later) with the latest iOS |
| Strap | Navy Blue Sport Band, M/L |
What’s in the box
- Apple Watch SE 3 (40mm Midnight Aluminium case)
- Navy Blue Sport Band (M/L)
- Apple Watch Magnetic Fast Charger to USB-C Cable (1m)


















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