Description The Apple Watch Series 9 features a 1.9-inch Always-On Retina display, S9 chip, and advanced health monitoring with a double-tap gesture. It supports cellular connectivity (on specific models), and includes a blood oxygen sensor, electrical heart sensor for ECG functionality, and crash detection. Product Specs Display: 1.9-inch Always-On Retina display (484 x 396 resolution, 326 ppi, 2000 nits brightness, 41mm or 45mm case) Processor: S9 dual-core 64-bit chip with 4-core Neural Engine and W3 wireless chip Sensors: Blood oxygen sensor (disabled in the US due to a patent dispute), electrical heart sensor, third-generation optical heart sensor, temperature sensor, accelerometer, gyroscope, barometric altimeter, compass Health Features: Blood oxygen monitoring (disabled in the US), ECG app, heart rate monitoring, irregular rhythm notifications, temperature sensing for cycle tracking, crash detection, fall detection, noise app, cycle tracking, workout tracking, swim tracking, emergency SOS, sleep apnea detection Audio: Built-in speaker and microphone Software: Latest watchOS Includes strap Charger not included
