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Apple Watch Series 11 vs Apple Watch Series 12

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AppleWatch Series 11AppleWatch Series 12
Overview
ReleasedSeptember 2025September 2026
Display
Case sizes42 mm or 46 mm42 mm or 46 mm
PanelLTPO OLEDLTPO OLED
Peak brightness2,000 nits2,000 nits
Always-on displayYesYes
Display detailAlways-On Retina display with wide-angle OLEDs and LTPO3; 374 x 446 pixels (42mm) or 416 x 496 pixels (46mm) at 326 ppi; 989 or 1,220 sq mm display area; 1 nit minimum brightnessAlways-On Retina display with wide-angle OLEDs and LTPO3; 1Hz refresh; 374 x 446 pixels (42mm) or 416 x 496 pixels (46mm) at 326 ppi; 970 or 1,196 sq mm display area; 1 nit minimum brightness
Screen protectionIon-X front glass with a ceramic coating, 2x more scratch resistant than Series 10 (aluminium cases); sapphire front crystal (titanium cases)Ceramic Shield 2 (aluminium cases); sapphire front crystal (titanium and ceramic cases)
Health and fitness
ECGYesYes
Blood oxygenYesYes
Skin temperatureYesYes
Sleep apnoea alertsYesYes
High blood pressure alertsYesYes
Body compositionNoNo
Fall detectionYesYes
Crash detectionYesYes
GPSSingle-bandSingle-band
Water resistance50 m50 m
SensorsElectrical heart sensor; third-generation optical heart sensor; blood oxygen sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor; depth gauge to 6 m; water temperature sensorHealth Sensing System with 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 m; water temperature sensor
Health featuresECG app; Blood Oxygen app; hypertension notifications; sleep apnoea notifications; irregular rhythm notifications; high and low heart rate notifications; Vitals app; sleep stages and sleep score; wrist temperature; Cycle Tracking with retrospective ovulation estimates; Medications; Mindfulness with state of mind tracking; NoiseReadiness app; Vitals app (heart rate, respiratory rate, wrist temperature, blood oxygen, sleep duration and HRV); Recovery HRV; high-frequency background heart rate tracking; ECG app; Blood Oxygen app; irregular rhythm notifications; high and low heart rate notifications; hypertension notifications; sleep apnoea notifications; sleep stages and sleep score; Cycle Tracking with fertile window and retrospective ovulation estimates, perimenopause and menopause support; Medications; Mindfulness; Noise
Fitness featuresCustom workouts; Training Load; heart rate zones; Race Route; Pacer; stride length, ground contact time and vertical oscillation; automatic track detection; multisport workouts; offline maps with custom route creation; Backtrack; pool and open-water swimming with SWOLF; cycling power zones with Bluetooth accessories; GymKitCustom workouts; Training Load; customisable heart rate zones; VO2 max; Race Route; Pacer; cadence, stride length, ground contact time, vertical oscillation and running power; automatic track detection; multisport workouts; offline maps with custom route creation; Backtrack; pool and open-water swimming with SWOLF; cycling power zones with Bluetooth accessories; GymKit
Safety featuresEmergency SOS; international emergency calling; Crash Detection; Fall Detection; noise monitoring; BacktrackEmergency SOS; international emergency calling; Fall Detection; Crash Detection; Check In; Backtrack; Last Emergency Call Availability Waypoint; torch; noise monitoring
Battery and connections
Battery life (maker's claim)Up to 24 hoursUp to 24 hours
In low-power modeUp to 38 hoursUp to 38 hours
Mobile data optionYesYes
Works withiPhoneiPhone
ChipS10S11
Storage64 GB64 GB
Battery life detailUp to 24 hours of normal use; up to 38 hours in Low Power ModeUp to 24 hours of normal use; up to 38 hours in Low Power Mode; up to 10 hours of outdoor workout
ChargingFast charging to 80% in about 30 minutes; 15 minutes for up to 8 hours of normal use; 5 minutes for up to 8 hours of sleep trackingFast charging to 80% in about 30 minutes; 15 minutes for up to 12 hours of normal use; 5 minutes for up to 10 hours of sleep tracking
ConnectivityWi-Fi 4 (802.11n) at 2.4GHz and 5GHz; Bluetooth 5.3; second-generation Ultra Wideband chip; NFC for Apple Pay; L1 GPS, GLONASS, Galileo, QZSS and BeiDou; GPS + Cellular models (A3335, A3337) with 5G RedCap and LTEWi-Fi 4 (802.11n) at 2.4GHz and 5GHz; Bluetooth 5.3; second-generation Ultra Wideband chip; NFC for Apple Pay; Precision L1 GPS (GPS, GLONASS, Galileo, QZSS and BeiDou); GPS + Cellular models (A3582, A3587) with 5G RedCap and LTE
Design
Weight (lightest version)29.7 g31.5 g
SoftwarewatchOSwatchOS
Case materials100% recycled aluminium or 100% recycled titanium case; water resistant to 50 m (ISO 22810:2010); IP6X dust resistant100% recycled aluminium or 3D-printed 100% recycled titanium case with zirconia back, or ceramic case; water resistant to 50 m (ISO 22810:2010); IP6X dust resistant
Size42mm is 42 x 36 x 9.7 mm; 46mm is 46 x 39 x 9.7 mm; lightest is the 42mm aluminium GPS + Cellular at 29.7 g, heaviest the 46mm titanium at 43.1 g42mm is 42 x 37 x 9.7 mm (ceramic 43 x 37 x 9.85 mm); 46mm is 46 x 40 x 9.7 mm (ceramic 47 x 41 x 9.85 mm); lightest is the 42mm aluminium GPS + Cellular at 31.5 g, heaviest the 46mm Night Blue ceramic at 52.9 g
BandsFits 130–200 mm wrists (42mm) or 140–245 mm wrists (46mm)Fits 130–200 mm wrists (42mm) or 140–245 mm wrists (46mm)
ColoursAluminium in Jet Black, Rose Gold, Silver and Space Grey; titanium in Natural, Gold and SlateAluminium in Dark Bronze, Light Gold, Black and Space Grey; titanium in Radiant Gold and Natural; ceramic in Pearl White and Night Blue
In the boxApple Watch Series 11, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)Apple Watch Series 12, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)

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