Apple Watch SE 3 vs Apple Watch Series 11

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Watch SE 3 compared with Watch Series 11

	AppleWatch SE 3	AppleWatch Series 11
Overview
Released
Released	September 2025	September 2025
Display
Case sizes
Case sizes	40 mm or 44 mm	42 mm or 46 mm
Panel
Panel	LTPO OLED	LTPO OLED
Peak brightness
Peak brightness	1,000 nits	2,000 nits (better)
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Always-On Retina display with OLED and LTPO; 324 x 394 pixels (40mm) or 368 x 448 pixels (44mm) at 326 ppi; 759 or 977 sq mm display area; 2 nits minimum brightness	Always-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 brightness
Screen protection
Screen protection	Ion-X front glass, 4x more crack resistant than SE 2	Ion-X front glass with a ceramic coating, 2x more scratch resistant than Series 10 (aluminium cases); sapphire front crystal (titanium cases)
Health and fitness
ECG
ECG	No	Yes
Blood oxygen
Blood oxygen	No	Yes
Skin temperature
Skin temperature	Yes	Yes
Sleep apnoea alerts
Sleep apnoea alerts	Yes	Yes
High blood pressure alerts
High blood pressure alerts	No	Yes
Body composition
Body composition	No	No
Fall detection
Fall detection	Yes	Yes
Crash detection
Crash detection	Yes	Yes
GPS
GPS	Single-band	Single-band
Water resistance
Water resistance	50 m	50 m
Sensors
Sensors	Second-generation optical heart sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor	Electrical 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 sensor
Health features
Health features	Heart Rate app; high and low heart rate notifications; irregular rhythm notifications; sleep apnoea notifications; sleep stages and sleep score; Vitals app (heart rate, respiratory rate, wrist temperature and sleep duration); Cycle Tracking with fertile window and retrospective ovulation estimates, perimenopause and menopause support; Medications; Mindfulness; Noise	ECG 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; Noise
Fitness features
Fitness features	Custom 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	Custom 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; GymKit
Safety features
Safety features	Emergency SOS; international emergency calling; Fall Detection; Crash Detection; Check In; Backtrack; noise monitoring	Emergency SOS; international emergency calling; Crash Detection; Fall Detection; noise monitoring; Backtrack
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 18 hours	Up to 24 hours
In low-power mode
In low-power mode	Up to 32 hours	Up to 38 hours
Mobile data option
Mobile data option	Yes	Yes
Works with
Works with	iPhone	iPhone
Chip
Chip	S10	S10
Storage
Storage	64 GB	64 GB
Battery life detail
Battery life detail	Up to 18 hours of normal use; up to 32 hours in Low Power Mode; up to 7 hours of outdoor workout	Up to 24 hours of normal use; up to 38 hours in Low Power Mode
Charging
Charging	Fast charging to 80% in about 45 minutes; 15 minutes for up to 8 hours of normal use; 8 minutes for up to 8 hours of sleep tracking	Fast 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 tracking
Connectivity
Connectivity	Wi-Fi 4 (802.11n) at 2.4GHz; Bluetooth 5.3; NFC for Apple Pay; L1 GPS (GLONASS, Galileo, QZSS and BeiDou); GPS + Cellular models (A3326, A3328) with 5G RedCap and LTE	Wi-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 LTE
Design
Weight (lightest version)
Weight (lightest version)	26.3 g (better)	29.7 g
Software
Software	watchOS	watchOS
Case materials
Case materials	100% recycled aluminium case with nylon composite and sapphire crystal back; water resistant to 50 m (ISO 22810:2010)	100% recycled aluminium or 100% recycled titanium case; water resistant to 50 m (ISO 22810:2010); IP6X dust resistant
Size
Size	40mm is 40 x 34 x 10.7 mm, 26.3 g (GPS) or 26.4 g (GPS + Cellular); 44mm is 44 x 38 x 10.7 mm, 32.9 g (GPS) or 33.0 g (GPS + Cellular)	42mm 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 g
Bands
Bands	Fits 130–200 mm wrists (40mm) or 140–245 mm wrists (44mm)	Fits 130–200 mm wrists (42mm) or 140–245 mm wrists (46mm)
Colours
Colours	Midnight or Starlight aluminium	Aluminium in Jet Black, Rose Gold, Silver and Space Grey; titanium in Natural, Gold and Slate
In the box
In the box	Apple Watch SE 3, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)	Apple Watch Series 11, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)