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Apple
Watch Series 9 45mm
This device is no longer available.
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Dimensions
Size (mm)
45.00 x 38.00 x 10.7
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Display
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Pixels
396 by 484 pixels
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Battery
Built-in rechargeable lithium-ion battery
Yes
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Processor
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Chipset
S9 SiP with 64-bit dual-core processor
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Memory
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Internal memory storage
64GB
Operating system
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watchOS
9
Subject to change based on future operating system updates
Siri
Ask Siri to set a reminder, send an invitation, or give you directions, all without your phone.
Wireless technology
4G LTE
Bands 1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 39, 40, 41, 66
UMTS/HSPA+/DC-HSDPA
850/1700/1900/2100MHz
NumberSync Capable
Required to use smartwatch over cellular; rate plan required
Wi-Fi connectivity
802.11b/g/n
Wi-Fi capability
2.4GHz and 5GHz
Bluetooth technology
5.3
SIM type
Electronic SIM
Apps
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Workout
Improved Workout app with new metrics, new views, and advanced ways to train.
Advanced safety features
Siren, Backtrack, Fall Detection,
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Emergency SOS,
9
and Crash Detection.
Activity
Track your daily activity on Apple Watch, and see your trends in the Fitness app on iPhone.
ECG
Generates an ECG similar to a single-lead electrocardiogram.
Heart Rate
Keep tabs on your resting, walking, and workout recovery heart rate.
Sensors
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Sensors
Electrical heart sensor and ECG app
Third-generation optical heart sensor
High and low heart rate notifications
Irregular rhythm notifications
Sleep stages
Temperature sensing
Compass
Always-on altimeter
High-g accelerometer
Up to 256 g-forces with Fall Detection and Crash Detection
High dynamic range gyroscope
Ambient light sensor
Temperature sensor
Yes
Messaging & email
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Text messaging
Yes
Music
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Music player
Apple Music®
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