Series 9	Stainless steel 41 mm case Ceramic and sapphire crystal back Water resistant 50 meters* Capacity 64GB IP6X certification fully resistant to dust
Screen	Always-On Retina display Connectivity Cellular** GPS/GNSS
Features	On-device Siri Double tap gesture Precision Finding for iPhone Blood Oxygen app ECG app High and low heart rate notifications Irregular heart rhythm notification Temperature sensing Crash detection Fall detection Emergency SOS Enhanced workout app International roaming International emergency calling Cycle tracking Sleep stage tracking Compass Always-On Altimeter Gyroscope Apple Pay GymKit Wireless service plan required for cellular service. *Contact your service provider for more details. International roaming is not supported. Check apple.com/watch/cellular for participating wireless carriers and eligibility. Some features are not available in all regions or all languages.
Water Resistance	Apple Watch Hermes Series 9 has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. However, it should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth.
Audio	Speaker Microphone
Sensors	Accelerometer (up to 32-g forces with fall detection) Optical heart sensor Ambient light sensor
System Requirements	Apple Watch Hermes Series 9 requires an iPhone Xs or later with iOS 17 or later.
Dimensions	Case width: 38 mm Case height: 45 mm Band: Wrist size from 160 mm to 195 mm
Materials	Stainless steel/leather