See How Google and Apple's Latest Big Announcements Compare

Google said during its I/O conference there are now seven Android Wear smart watches available. New features unveiled include new wrist gestures and a low-power black and white mode.

Apple unveiled a new Apple Watch feature called nightstand mode, allowing the Watch face to be viewed on its side. The buttons can be used to snooze or stop a morning alarm.

Google's Android Pay will be on the next version of Google's Android operating system, and it will boast new ways to fetch information, pay merchants and protect privacy on mobile devices as the Internet company duels with Apple in the quest to make their technology indispensable.

Google revealed its next Android operating system, Android M. New features of Android M include improved web experience and simplified application permission settings.

Apple unveiled its newest operating system, iOS 9. Like Android M, the focus is on refining the existing operating system, and new iOS 9 features include public transport directions for Maps and Apple News.

Google showed off Android Auto, a car interface connected to Android phones that helps you stay focused while driving — there are voice controls, integrated wheel controls and directions, among other features. The Hyundai Sonata will be the first car to arrive with Android Auto.

Apple announced new features for CarPlay, including the support of third-party apps by automakers that allow you to control the radio or air. Apple also discussed the wireless mode, which has been around since iOS 8.3 but not yet functional since no cars currently support it yet.

Google said there are now over 4,000 Android Wear apps available, and previewed new Android Wear apps including Uber and Shazam.

Apple showed off the increasing number of apps that allow in-app purchases with Apple Pay, which is already integrated into one million locations.

Google unveiled Google Photos, which offers free, unlimited storage for pictures and videos. It also automatically sorts photos, such as by face, place or object.

Apple revealed its music service, named Apple Music, with similar features to Spotify. Apple Music is cheaper for family plans, though: Apple's costs $14.99 for up to six people, while Spotify's costs $14.99 for two people.