MacBook Air lasts up to an incredible 12 hours between charges. So from your morning coffee to your evening commute, you can work unplugged. When it’s time to kick back and relax, you can get up to 12 hours of iTunes movie playback. And with up to 30 days of standby time, you can go away for weeks and pick up where you left off.Whatever the task, fifth-generation Intel Core i5 and i7 processors with Intel HD Graphics 6000 are up to it. From editing photos to browsing the web, everything happens ultra-fast. And all that power is encased in an incredibly thin 1.7-centimetre unibody design that weighs only 1.35 kilos.Instantly connect to an 802.11ac base station — including AirPort Extreme or AirPort Time Capsule — and experience wireless performance up to three times faster than the previous Wi-Fi generation. 802.11ac also delivers expanded range, so you can work more freely than ever.macOS is the operating system that powers everything you do on a Mac. macOS High Sierra brings new forward‑looking technologies and enhanced features to your Mac. It’s macOS at its highest level yet.