The iTunes movie playback test measures battery life by playing back HD 1080p content with display brightness set to 12 clicks from bottom or 75%. The wireless web test measures battery life by wirelessly browsing 25 popular websites with display brightness set to 12 clicks from bottom or 75%. Testing conducted by Apple in May 2017 using preproduction 2.3GHz dual-core Intel Core i5-based 13-inch MacBook Pro systems with 8GB of RAM and 1TB SSD.
MacOS is the operating system that powers everything you do on a Mac.
Simultaneously supports full native resolution on the built-in display at millions of colors and: