Apple WatchOS 4 Full Operating System Specifications
With systemwide improvements in watchOS 4, your apps will be faster and more responsive than ever. Use new background modes for navigation and audio recording. Access Core Bluetooth to connect directly with accessories. And coming soon with Apple Watch Series 3, your apps can take advantage of built-in cellular and altimeter capabilities.
General Attributes
Apple
WatchOS 4
2017 Sep 12
WatchOS 4
Platform
Mach
Apple iOS / iPadOS family
Hardware Environment
ARM instruction set
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Devices Using Apple WatchOS 4
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