Nexus 6

The Nexus 6 is the next Google Nexus device to be released. It was released alongside Android 5.0 Lollipop, being one of the first devices to run the version of the operating system. It is the successor of the Nexus 5, and is one of the most advanced and fastest phones ever to be produced with high end specs, such as a 2K display, 3GB RAM, 2.7GHz Quad-Core Processor, and 4K UHD camera and video capture.

Source

 * Google's Official Site
 * Motorola's Official Site