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Apple Watch Series 12 vs Apple Watch Ultra 3 comparison

 Compare Apple Watch Series 12
Apple Watch Series 12
Compare Apple Watch Ultra 3
Apple Watch Ultra 3
key specs
Display Size46mm49mm
Dial ShapeRectangleSquare
Display TypeOLED RetinaOLED Retina
Ideal ForUnisexUnisex
Compatible OS-iOS 26
general
BrandAppleApple
ModelWatch Series 12Watch Ultra 3
Release dateSeptember 9, 2026September 9, 2025
Dial ShapeRectangleSquare
UsageRegular, Sports-
Ideal ForUnisexUnisex
Model Name-Watch Ultra 3
Dial Colour-Natural, Black
Size-Large
Touchscreen-Yes
Interchangeable Strap-Yes
Water Resistant-WR100
Water Resistance Depth-100
Dial Material-Titanium
product details
SensorNew optical and electrical heart sensors, optical heart sensor-
Compatible DeviceiPhone 11 or later, or iPhone SE (2nd generation or later), with iOS 27 or lateriPhone 11 and above
Battery Life24 hoursUp to 24 hours
Charger TypeMagnetic charging portWireless
Rechargeable BatteryYes-
Other FeaturesReadiness score, Siri AI-
connectivity features
Call FunctionYesYes
BluetoothYesYes
Wi-FiYesYes
GPSYesYes
Bluetooth Version-5.3
Messaging Support-Yes
Other Connectivity Features-Satellite Emergency SoS
platform and storage features
Operating SystemwatchOS 27watchOS 26
Processor NameApple S11 chipApple S11
Compatible Operating System-iOS 26
Internal Memory-64GB
camera and display features
Display Resolution416 × 496-
Display Size46mm49mm
Display TypeOLED RetinaOLED Retina
Scratch ResistantCeramic Shield 2 on aluminium models-
Other Display FeaturesUp to 2,000 nits brightness, LTPO3, Always-On displayAlways-On Display
fitness and watch functions
Step CountYesYes
Calorie CountYesYes
Heart Rate MonitorYesYes
AltimeterYes-
CompassYesYes
CalendarYesYes
Alarm ClockYesYes
ChronographYes-
Date & Time DisplayYesYes
LanguageEnglish-
Number of Buttons23
Other Fitness FeaturesECG, sleep tracking, sleep score, sleep apnoea notifications, heart rate notifications, HRV, readiness score, VO2 max, heart rate zones, Training Load, workout tracking, cycle tracking, step tracking, GPS, elevation tracking-
audio and video features
SpeakerYesYes
Gesture ControlYesYes
MicrophoneYesYes
Voice ControlSiri AIYes
dimensions
Width-44
Height-49
Thickness-12
Weight (g)-61.60
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