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Apple Watch SE 3 vs Apple Watch Series 10

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

Better figure, where one is clearly better

AppleWatch SE 3AppleWatch Series 10
Overview
ReleasedSeptember 2025September 2024
Display
Case sizes40 mm or 44 mm42 mm or 46 mm
PanelLTPO OLEDLTPO OLED
Peak brightness1,000 nits2,000 nits
Always-on displayYesYes
Display detailAlways-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 brightnessAlways-On Retina LTPO3 display with wide-angle OLED, up to 40% brighter when viewed at an angle; 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, 4x more crack resistant than SE 2Ion-X front glass (aluminium cases); sapphire front crystal (titanium cases)
Health and fitness
ECGNoYes
Blood oxygenNoYes
Skin temperatureYesYes
Sleep apnoea alertsYesYes
High blood pressure alertsNoYes
Body compositionNoNo
Fall detectionYesYes
Crash detectionYesYes
GPSSingle-bandSingle-band
Water resistance50 m50 m
SensorsSecond-generation optical heart sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensorElectrical heart sensor; third-generation optical heart sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer (up to 256 g); high dynamic range gyroscope; ambient light sensor; depth gauge to 6 m; water temperature sensor
Health featuresHeart 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; NoiseVitals app (heart rate, respiratory rate, wrist temperature, blood oxygen and sleep duration); irregular rhythm notifications; high and low heart rate notifications; low cardio fitness notifications; sleep stages and sleep score; Cycle Tracking with retrospective ovulation estimates; Medications; Mindfulness with state of mind tracking; Noise
Fitness featuresCustom 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; GymKitCustom 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; pool and open-water swimming with SWOLF and automatic stroke detection; snorkelling to 6 m with the Depth app; cycling power zones and cadence with Bluetooth accessories; GymKit
Safety featuresEmergency SOS; international emergency calling; Fall Detection; Crash Detection; Check In; Backtrack; noise monitoringEmergency SOS; international emergency calling; Check In; Backtrack; torch; noise monitoring
Battery and connections
Battery life (maker's claim)Up to 18 hoursUp to 18 hours
In low-power modeUp to 32 hoursUp to 36 hours
Mobile data optionYesYes
Works withiPhoneiPhone
ChipS10S10
Storage64 GB64 GB
Battery life detailUp to 18 hours of normal use; up to 32 hours in Low Power Mode; up to 7 hours of outdoor workoutAll-day figure tested over 18 hours with 300 time checks, 90 notifications, 15 minutes of app use and a 60-minute workout with music (GPS + Cellular model with 4 hours on LTE); built-in rechargeable lithium-ion battery
ChargingFast 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 trackingFast charging to 80% in about 30 minutes; 15 minutes for up to 8 hours of normal use; 8 minutes for up to 8 hours of sleep tracking
ConnectivityWi-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 LTEL1 GPS, GNSS, Galileo and BeiDou; 4G LTE and UMTS (GPS + Cellular models); Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband chip; Apple Pay
Design
Weight (lightest version)26.3 g29.3 g
SoftwarewatchOSwatchOS
Case materials100% recycled aluminium case with nylon composite and sapphire crystal back; water resistant to 50 m (ISO 22810:2010)100% recycled aluminium case, or polished grade 5 titanium case (95% recycled titanium); metal and sapphire crystal back; water resistant to 50 m (ISO 22810:2010), for swimming and snorkelling; IP6X dust resistant
Size40mm 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, 30 g (aluminium, GPS), 29.3 g (aluminium, GPS + Cellular) or 34.4 g (titanium); 46mm is 46 x 39 x 9.7 mm, 36.4 g (aluminium, GPS), 35.3 g (aluminium, GPS + Cellular) or 41.7 g (titanium); lightest is the 42mm aluminium GPS + Cellular
BandsFits 130–200 mm wrists (40mm) or 140–245 mm wrists (44mm)Fits 130–200 mm wrists (42mm) or 140–245 mm wrists (46mm)
ColoursMidnight or Starlight aluminiumAluminium in Jet Black, Rose Gold and Silver; titanium in Natural, Gold and Slate
In the boxApple Watch SE 3, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)Apple Watch Series 10, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)

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