As per the subject. 1 MacBook air, 4GB RAM, 128GB SSD and 13", Haswell CPU.
Full specs: http://www.apple.com/nz/macbook-air/specs.html
The claimed "up to 12 hours battery life" isn't just a marketing gimmick, I easily get 10-12 hours out of a charge.
Has an "Iron Man" vinyl decal on the lid whose chest lights up instead of the usual Apple logo, easily removed if you don't like it.
Has OS X Mavericks (10.9) installed. All original packaging, charger etc.