Mac OS X 10.6 Snow Leopard Included - Snow Leopard is either preinstalled or a separate Snow Leopard DVD is in the box for easy installation.

The world's thinnest notebook.
MacBook Air is ultrathin, ultraportable, and ultra unlike anything else. But you dont lose inches and pounds overnight. Its the result of rethinking conventions. Of multiple wireless innovations. And of breakthrough design. With MacBook Air, mobile computing suddenly has a new standard.

A no-compromise display.
The glossy 13.3-inch, widescreen LED backlit MacBook Air display is the same viewable size as the screen on MacBook. The 1280-by-800 resolution gives you vibrant images and rich colors at full brightness the moment you open MacBook Air. So you get full-screen performance with all the benefits of a slim design

Micro. Chip.
MacBook Air performance is as impressive as its form, thanks to its 1.6GHz or 1.8GHz Intel Core 2 Duo processor. This chip was custom-built to fit within the compact dimensions of MacBook Air.

Without wires, youre free to go anywhere.
MacBook Air is the notebook that allows for a fully wireless lifestyle. It all starts with the fastest-available, next-generation 802.11n Wi-Fi and Bluetooth 2.1 + EDR built in. And thats just the beginning of the unprecedented wireless capabilities of MacBook Air.

Ahead of the curve.
In redefining thin, MacBook Air has shed something you no longer need: the optical drive. Thats because MacBook Air is built for the wireless world. So instead of watching DVDs, you can rent movies wirelessly from the iTunes Store. And instead of backing up files to a stack of discs, you can back up files wirelessly using Apples new Time Capsule.

However, for those times when you still need to install software on MacBook Air from a CD or DVD, a new feature called Remote Disc lets you wirelessly use or “borrow” the optical drive of a Mac or PC in the vicinity. So you can have full access to an optical drive without having to haul one around.

Even migration is wireless.
How do you transfer all of your files, music, photos, and other valuable content from your old Mac to your new MacBook Air? Forget the FireWire cable — thats the old way. MacBook Air lets you migrate everything wirelessly.

When you turn on MacBook Air for the first time, Setup Assistant walks you through the initial setup. Install the Remote Disc Setup software on the old Mac, and it will then be available to transfer information onto your new MacBook Air. Its all wireless. All simple. And all secure.

Introducing wireless backup.
Mac OS X Leopard brought you Time Machine, the built-in backup that automatically copies files to an external drive. And now, Time Capsule — the new hard drive plus Wi-Fi base station — lets you use Time Machine to wirelessly back up your files. Its effort free and yet another way MacBook Air lets you live and work untethered.