The fact is that Haswell processors are extremely power efficient, so we don't think that claims of 11 inch MacBook Air offering 9 hours and 13 inch MacBook Air offering 12 hours of battery life are far-fetched. Apple says that the batteries are good for 10 hours of continuous iTunes movie playback, which is certainly a good thing.
The design of 2013 new MacBook air has not been changed at all. It is still touting the tear-drop shaped design that the MacBook Air first came out with. All improvements that have been made lie under the hood. The 11 inch 128GB flash storage model comes with a price tag of $999. The 13 inch with same amount of flash storage will set you back $1099. The 2013 new MacBook Air models start shipping from today.
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