watchOS 4.2

watchOS 4.2 release notes

On December 5, 2017, Apple released the watchOS 4.2 software update, bringing the new Apple Pay Cash peer-to-peer payment feature to your wrist and adding other new capabilities.

Video: hands-on with Apple Pay Cash

iOS 11.2 and watchOS 4.2 are mostly bug-fix updates, but with one big new feature: the inclusion of Apple Pay Cash, an easy way to pay and request money from friends using your iPhone, iPad or Apple Watch.