Google Play Services allows you to update Google and Google Play apps.
This component provides core functionality, such as Google services authentication, contact synchronization, access to all of the latest privacy settings, and better, more energy-efficient geolocation services.
Google Play services also provide you with improved user experience. They make searches faster offline, offer more immersive maps and help you get real fun when you play.
For More Info Google Play
varies with device
Download Google Play services 11.7.42 APK For Android