watchOS

The Apple Watch operating system, introduced in April 2015. In the same year, watchOS 2 added a variety of features, including an enhanced Siri, more watch faces, support for third-party apps that run without pairing to the iPhone and an alarm clock/nightstand mode.

watchOS 3
In 2016, a more efficient watchOS 3 debuted with Apple's second-generation smartwatches. New watch faces and several features were added, including more Siri integration, improved social apps and a personal alarm that dials an emergency number.

watchOS 4
In 2017, watchOS 4 added more Siri-based watch faces for daily news and reminders, a changing kaleidoscope face and several animated Toy Story faces. Activity apps are enhanced, supporting multiple workouts, more personalized notifications, multiple workouts in a single session and integration with major gym equipment. Music app more integrated with workouts.

watchOS 5
In 2018, watchOS 5 added a walkie talkie to send messages to other Apple Watch users via Wi-Fi or cellular. It added automatic workout detection that starts tracking if the wearer forgets to start the app. watchOS 5 requires a minimum of an iPhone 5S, iOS 12 and second generation Apple Watch. See Apple Watch.

单词	watchos
释义	watchOS watchOS The Apple Watch operating system, introduced in April 2015. In the same year, watchOS 2 added a variety of features, including an enhanced Siri, more watch faces, support for third-party apps that run without pairing to the iPhone and an alarm clock/nightstand mode. watchOS 3 In 2016, a more efficient watchOS 3 debuted with Apple's second-generation smartwatches. New watch faces and several features were added, including more Siri integration, improved social apps and a personal alarm that dials an emergency number. watchOS 4 In 2017, watchOS 4 added more Siri-based watch faces for daily news and reminders, a changing kaleidoscope face and several animated Toy Story faces. Activity apps are enhanced, supporting multiple workouts, more personalized notifications, multiple workouts in a single session and integration with major gym equipment. Music app more integrated with workouts. watchOS 5 In 2018, watchOS 5 added a walkie talkie to send messages to other Apple Watch users via Wi-Fi or cellular. It added automatic workout detection that starts tracking if the wearer forgets to start the app. watchOS 5 requires a minimum of an iPhone 5S, iOS 12 and second generation Apple Watch. See Apple Watch.
随便看	first-order predicate logic first order reaction first-order reaction first order reed-muller code first-order relief first order-second moment analysis first-order shear deformation plate theory first-order small slope approximation first-order spectrum first-order station first-order subroutine first-order system least-squares first-order taylor series expansion first-order test first-order theorem proving first order theories first-order theory first-order theory of oscillator strength first-order transition first-order uncertainty analysis first-order value iteration first-order wave equation first-order zero-disparity first or last first overtone band