Apple Watch Series 12 · UK MJFN4MP/A
Compared with yours · Apple Watch SE 3
- DisplayAlways-On Retina display with OLED and LTPO; Tough Ion-X front glass with 4x crack resistance; 1,000 nits peak brightness; 2 nits minimum brightness; 326 pixels per inch → Always-On Retina display with wide-angle OLEDs and LTPO3; 1Hz refresh; Active area (42mm): 374x446 pixels, 326 pixels per inch; Ceramic Shield 2 (aluminium cases); 2,000 nits peak brightness; 1 nit minimum brightness
- ConnectionsAll models Support for 2.4GHz Wi-Fi networks Wi-Fi 4 (802.11n) Bluetooth 5.3 L1 GPS (GLONASS, Galileo, QZSS and BeiDou) Apple Pay GymKit → All models Support for 2.4GHz and 5GHz Wi-Fi networks Wi-Fi 4 (802.11n) Bluetooth 5.3 Precision L1 GPS (GPS, GLONASS, Galileo, QZSS and BeiDou) Second-generation Ultra Wideband chip Apple Pay GymKit
- Weight32.9 g → 32.2 g
- SensorsSecond-generation optical heart sensor Temperature sensor Compass Always-on altimeter High-g accelerometer High dynamic range gyroscope Ambient light sensor → Health Sensing System: third-generation electrical heart sensor, always-on optical heart sensor, blood oxygen sensor and temperature sensor Compass Always-on altimeter High-g accelerometer High dynamic range gyroscope Ambient light sensor Depth gauge to 6 metres Water temperature sensor
- BatteryAll-day battery life, up to 18 hours of normal use Up to 32 hours in Low Power Mode Up to 7 hours outdoor workout Built-in rechargeable lithium-ion battery Fast-charge capable Up to 80% charge in about 45 minutes 15 minutes for up to 8 hours of normal use 8 minutes for up to 8 hours of sleep tracking Learn more → All-day battery life, up to 24 hours of normal use Up to 38 hours in Low Power Mode Up to 10 hours outdoor workout Built-in rechargeable lithium-ion battery Fast-charge capable Up to 80% charge in about 30 minutes 15 minutes for up to 12 hours of normal use 5 minutes for up to 10 hours of sleep tracking Learn more
3 more differences
- Case size44 mm → 42 mm
- DimensionsHeight: 44 mm; Width: 38 mm; Depth: 10.7 mm → Height: 42 mm; Width: 37 mm; Depth: 9.7 mm
- Manufacturer durability claimsWater resistance 50m (swimproof) → Water resistance 50m (swimproof) under ISO standard 22810:2010 Dust resistance IP6X
Same: Compatibility iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later
Compare side by sideFull comparison vs Apple Watch SE 3 · UK MEHV4MP/A
More details & evidence
Exact model: UK MJFN4MP/A · 42mm · Aluminium · Space Grey · GPS
Sources: 17 of 18 specifications cited.
Evidence · Some facts need verification
17/18 listed facts sourced. Checked date unavailable. This describes source coverage, not product quality or independent testing.
- Manufacturer facts
- 17
- Calculated from sources
- 0
- Independent measurements
- Not available
- Owner evidence
- Not available
- Conflicting facts
- None recorded
UK exact model
Market details
UK specification. UK availability not verified.
The specification region comes from this product’s reviewed variant record. It does not confirm local stock, warranty or delivery.
Check the manufacturer sourceWe have no current verified retailer listing for this exact variant in United Kingdom. A price you enter does not establish retailer availability.
Before you choose
- Strap selection and combined strap weight are unspecified. Battery, sensors and durability figures are manufacturer claims with the cited conditions.Apple UK — literal MJFN4MP/A case selectionApple UK — Watch Series 12 technical specifications
Key specification sources
Evidence & conditions
Manufacturer specification
GPS selected; cellular-only model groups and radio bands are excluded. Ultra Wideband availability varies by region. For more information, visit support.apple.com/en-gb/109512 . Any card used in Apple Pay is offered by the card issuer. To use Apple Pay you need a supported card from a participating card issuer. To check if your card is compatible with Apple Pay, contact your card issuer. Apple Pay is not available in all markets. View Apple Pay countries and regions . Data plan required. 5G is available in selected markets and through selected network providers. Speeds vary based on site conditions and network. For details on 5G support, contact your provider and see apple.com/uk/watch/cellular . Wireless service plan required for mobile service. Contact your service provider for more details. Connection may vary based on network availability. Check apple.com/uk/watch/cellular for participating network providers and eligibility. See support.apple.com/en‑gb/HT207578 for additional setup instructions. Not all features will be available if the Apple Watch is set up through Apple Watch For Your Kids. Check support.apple.com/en‑gb/109036 for details. Wireless service plan required for mobile service. Check apple.com/uk/watch/cellular for participating network providers and eligibility.
Apple UK — literal MJFN4MP/A case selectionApple UK — Watch Series 12 technical specificationsEvidence & conditions
Manufacturer specification
Manufacturer row: Weight (aluminium, GPS). The cited table does not establish the combined mass with a selected strap.
Apple UK — Watch Series 12 technical specificationsEnter a price you found
Your total including delivery and taxes, for this exact variant in new condition. This remains your assumption.
