Display: Always-On Retina LTPO OLED display (45mm: 396 x 484 pixels, 1143 sq. mm display area; 41mm: 352 x 430 pixels, 904 sq mm display area). Case Material: Aluminium or Stainless Steel. Size: 45mm or 41mm. Health Features: Electrical heart sensor (ECG app). Third-generation optical heart sensor. Blood oxygen sensor (Blood Oxygen app). High and low heart rate notifications. Irregular rhythm notifications. Low cardio fitness notifications. Temperature sensing. Cycle Tracking with retrospective ovulation estimates. Supports Family Setup (GPS + Cellular models only). Up to 18 hours battery life. Up to 36 hours in Low Power Mode. Fast charging
* Display: Always-On Retina LTPO OLED display (45mm: 396 x 484 pixels, 1143 sq. mm display area; 41mm: 352 x 430 pixels, 904 sq mm display area)
* Brightness: Up to 1000 nits
* Case Material: Aluminium or Stainless Steel
* Size: 45mm or 41mm
* Health Features:
* Electrical heart sensor (ECG app) [3]
* Third-generation optical heart sensor
* Blood oxygen sensor (Blood Oxygen app) [2]
* High and low heart rate notifications
* Irregular rhythm notifications [2]
* Low cardio fitness notifications
* Temperature sensing [5] (availability may vary by region)
* Cycle Tracking with retrospective ovulation estimates [6]
* Emergency SOS [4]
* International emergency calling [14]
* Fall Detection and Crash Detection
* Other Features:
* GPS, GLONASS, Galileo, QZSS, and BeiDou
* Compass
* Always-on altimeter
* Water resistant up to 50 meters [1]
* Accelerometer (up to 32 g-forces with fall detection)
* Gyroscope
* Ambient light sensor
* Speaker
* Microphone
* Apple Pay
* GymKit
* Capacity: 32GB
* Ceramic and sapphire crystal back (depending on model)
* Available cellular connectivity [7]
* Supports Family Setup (GPS + Cellular models only) [8]
* Up to 18 hours battery life [18]
* Up to 36 hours in Low Power Mode [18]
* Fast charging
Your Apple Watch series 9 comes with 1 year of hardware repair coverage through its limited warranty and up to 90 days of complimentary technical support.