AKG has added to their line of headphones this week with the announcement of the N60 NC Wireless and N20 NC headphones. The N60 NC Wireless is, as the name implies, a revision of AKG's N60 NC sans wire. The N60 NC Wireless features an active noise cancellation (ANC) system that was specifically designed with frequent fliers in mind. Like the original, the N60 NC Wireless can fold down to fit inside compact carry-on luggage. It features a 30 hour battery life which means it can last the duration of even the longest international flights, and should it run out of charge there's an included cable for wired use as well. The AKG N60 NC Wireless will be available in April for $299 USD. If wireless isn't your thing, AKG has also announced a new wired noise cancelling headphone, the N20 NC. Like the N60 NC Wireless, this it an ANC on-ear headphone for those who spend a lot of time traveling. The N20 NC has a 20 hour battery life and will continue to play music without the noise cancelling if batteries are empty. The AKG N20 NC will be available this summer for $199 USD.