Apple Watch Series 12 / Apple Watch SE (2nd generation, 44 mm)

Apple Watch Series 12: 42 / 46 mm · Case material options

Apple Watch SE (2nd generation, 44 mm): Apple Watch SE (2nd generation), 44 mm aluminium case; GPS and GPS + Cellular models. The 40 mm case, the original Apple Watch SE (2020) and Apple Watch SE 3 are separate models.

SpecificationApple Watch Series 12Apple Watch SE (2nd generation, 44 mm)
Release year20262022
ProcessorS11; 64-bit dual-core; 4-core Neural Engine Apple—
Storage64 GB Apple—
DisplayAlways-On Retina LTPO3 OLED; 326 ppi; 2000 nits peak, 1 nit minimum; 46 mm: 416 × 496; 42 mm: 374 × 446

LTPO3 drops to 1 Hz in Always-On mode to save power.

Apple		Retina LTPO OLED; 368 × 448 pixels, 977 sq mm display area, 326 ppi; up to 1000 nits; Ion-X glass

SE has no always-on mode; the screen wakes when you raise your wrist. Ion-X is strengthened glass and is not as scratch-resistant as sapphire.

Apple
Cover glassAluminium: Ceramic Shield 2; titanium/ceramic: sapphire Apple—
Case and material42 / 46 mm; aluminium, titanium or ceramic

Ceramic cases are slightly larger and thicker (9.85 mm); aluminium and titanium are 9.7 mm.

Apple		—
Rated battery lifeUp to 24 hours normal use; up to 38 hours Low Power Mode; up to 10 hours workout tracking

Apple's test profile; actual use varies.

Apple		—
Rated charging timeAbout 80% in 30 minutes; 15 minutes gives up to 12 hours of normal use

Apple measured these with a 20 W adapter that is not included; a USB-C fast-charging cable is in the box.

Apple		—
SensorsSecond-generation electrical and always-on optical heart sensors; blood oxygen; temperature; compass; always-on altimeter; high-g accelerometer; depth gauge to 6 m; water temperature Apple2nd-gen optical heart sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor

The high-g accelerometer and gyroscope are used for Crash Detection. ECG, blood oxygen and temperature sensors are not included on this model.

Apple
Health featuresECG; irregular rhythm and high/low heart rate notifications; hypertension and sleep apnoea notifications; sleep score; Vitals; Readiness

Some health features are limited by country and age; blood oxygen and temperature are not for medical use.

Apple		—
Weight46 mm aluminium GPS 39.5 g; titanium 44.9 g; 42 mm aluminium GPS 32.2 g; titanium 36.5 g Apple—
Durability50 m water resistance (ISO 22810:2010); IP6X dust

For swimming and snorkelling to 6 m, not scuba diving. Resistance can diminish over time.

Apple		—
ConnectivityWi-Fi 4 (2.4 and 5 GHz); Bluetooth 5.3; second-generation UWB; multi-constellation GPS; RedCap 5G on cellular models Apple—
CompatibilitywatchOS 27; iPhone 11 or later (including iPhone SE 2nd generation or later) running iOS 27 AppleiPhone Xs or later with iOS 18

The watch can only be set up and used with an iPhone; it does not work with Android phones.

Apple
Case and weight—44 × 38 × 10.7 mm aluminium case; GPS 32.9 g, GPS + Cellular 33 g

Weight is for the case only and rises with the band. The 44 mm case fits 140–245 mm wrists.

Apple
Chip and storage—S8 SiP (64-bit dual-core processor); 2-core Neural Engine; 32 GB

Storage holds music, podcasts and apps and cannot be expanded.

Apple
Safety features—Emergency SOS; International Emergency Calling; Fall Detection; Crash Detection

Crash Detection can call emergency services after a severe car crash. Emergency SOS needs a cellular connection or Wi-Fi calling with internet access from the watch or a nearby iPhone.

Apple
Battery—Up to 18 hours; about 80% charge in about 1.5 hours

Apple measures 18 hours with 90 time checks, 90 notifications, 45 minutes of app use and a 60-minute workout with music; on the cellular model, 4 of those hours are on LTE. Longer GPS workouts shorten it.

Apple
Water resistance—50 metres under ISO 22810:2010

Suitable for swimming, but not for scuba diving, water skiing or high-velocity water sports.

Apple
Location and wireless—L1 GPS, GNSS, Galileo and QZSS; Wi-Fi 4 (802.11n); Bluetooth 5.3; LTE and UMTS on the GPS + Cellular model

The cellular model can make calls and use data without your iPhone nearby; carrier support is required.

Apple
Colours—Midnight, Starlight and Silver Apple