The MacBook and MacBook Pro feature the innovative MagSafe Power Connector. The adapter secures to the computer via a magnetic connection. If you trip over your power cord, you no longer have to worry about dragging your laptop off a desk or table - the cord will simply disconnect and no damage will be done.
This portable power adapter is compatible with EmPower and 20mm power outlets that are present on many commercial airplanes. It will let you power your notebook during a long flight.