Apple Watch Series 12 / Apple Watch Ultra 2

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

Apple Watch Ultra 2: Apple Watch Ultra 2, 49 mm titanium case, GPS + Cellular; natural (2023) and black titanium added in 2024. Band options (Alpine Loop, Trail Loop, Ocean Band, Titanium Milanese Loop) vary by size. The Apple Watch Ultra (2022) and Ultra 3 (2025) are separate models.

Specification	Apple Watch Series 12	Apple Watch Ultra 2
Release year	2026	2023
Processor	S11; 64-bit dual-core; 4-core Neural Engine Apple	—
Storage	64 GB Apple	—
Display	Always-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	Always-On Retina LTPO2 OLED; 410 × 502 pixels, 326 ppi; 1,185 mm² display area Brightness goes up to 3,000 nits and down to 1 nit in the dark. LTPO2 lowers the refresh rate to reduce battery use in always-on mode. Apple
Cover glass	Aluminium: Ceramic Shield 2; titanium/ceramic: sapphire Apple	—
Case and material	42 / 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 life	Up 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 time	About 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	—
Sensors	Second-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 Apple	Electrical heart sensor; third-generation optical heart sensor; temperature sensor; depth gauge; water temperature sensor; compass; always-on altimeter The electrical sensor runs the ECG app (age 22 and over). The temperature sensor is not for medical use; it supports retrospective ovulation estimates in cycle tracking. Apple
Health features	ECG; 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	—
Weight	46 mm aluminium GPS 39.5 g; titanium 44.9 g; 42 mm aluminium GPS 32.2 g; titanium 36.5 g Apple	—
Durability	50 m water resistance (ISO 22810:2010); IP6X dust For swimming and snorkelling to 6 m, not scuba diving. Resistance can diminish over time. Apple	—
Connectivity	Wi-Fi 4 (2.4 and 5 GHz); Bluetooth 5.3; second-generation UWB; multi-constellation GPS; RedCap 5G on cellular models Apple	—
Compatibility	watchOS 27; iPhone 11 or later (including iPhone SE 2nd generation or later) running iOS 27 Apple	iPhone Xs or later, or iPhone SE (2nd generation or later), with iOS 18 or later The watch is set up and used only with an iPhone; it does not work with Android phones. Apple
Case	—	49 mm, Grade 5 titanium; natural or black; 49 × 44 × 12 mm Weight is 61.4 g in natural and 61.8 g in black. Fits 130–210 mm wrists. Apple
Glass	—	Flat sapphire crystal front Apple
Chip and storage	—	S9 SiP (64-bit dual-core processor, 4-core Neural Engine); 64 GB The S9 SiP can process Siri requests on the device and supports the double tap gesture (tapping thumb and index finger together twice). Apple
Location	—	L1 + L5 dual-frequency GPS; GLONASS, Galileo, QZSS, BeiDou The L5 band helps reduce position errors where signals bounce, such as among tall buildings and dense trees. Apple
Diving and durability	—	100 m water resistance under ISO 22810:2010 (WR100); recreational scuba diving to 40 m under EN13319; IP6X under IEC 60529; MIL-STD 810H testing The depth gauge is accurate to ±1 m; Apple advises against diving below 40 m. The MIL-STD 810H tests cover altitude, temperature shock, freeze/thaw, shock and vibration. Apple
Cellular and wireless	—	4G LTE and UMTS; Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband chip Cellular use needs a carrier plan. Ultra Wideband enables precision finding of an iPhone; availability depends on the country. Apple
Battery and charging	—	Up to 36 hours in normal use and 72 hours in Low Power Mode; fast charge to 80% in about 1 hour; built-in lithium-ion The box includes a 1 m magnetic fast charger to USB-C cable; no adapter. Apple
Controls and safety	—	Customisable Action button; Digital Crown with haptic feedback; siren; Emergency SOS, fall and crash detection The Action button is also used for Precision Start, beginning a workout recording at the exact start. The siren sounds a loud alert to call for help. Apple
Operating conditions	—	On wrist –20 to 55 °C; diving 0–40 °C; altitude –500 to 9,000 m Apple