One Direction are releasing a range of alarm clocks and headphones.

The 'One Thing' hitmakers - Zayn Malik, Louis Tomlinson, Harry Styles, Liam Payne and Niall Horan - have signed a deal with electronics specialist Jazwares for a merchandise line that will also include speakers, microphones, ear buds, walkie-talkies, boom boxes and a karaoke machine.

Laura Zebersky, executive vice president of sales at Jazwares, said: "With more than three million twitter followers and a debut album that has gone gold and platinum across the globe, it's clear that the guys from One Direction are superstars that tween and teen fans can't get enough of.

"We are thrilled to add One Direction to our portfolio, and look forward to developing our programme with the band to bring personal and innovative electronics to their millions of fans."

Barry Drinkwater, founder and owner of Global Merchandising Services added: "We are very excited to partner with Jazwares.

"They are a perfect partner in this category and we know the fans will agree."

The products will be available in the UK, US, Latin America, Ireland, and Canada.

Meanwhile, the group - who formed on UK TV talent show 'The X Factor' in 2010 - admit they are still stunned by their worldwide success.

Niall told MTV News: "To be honest, if you had said to us a year ago, and this sounds so cliché, [but] if you had said to us a year ago that we were gonna be touring America, we would absolutely have fell on the ground laughing at you.

"Obviously when the record label and stuff wanted to send us to America just to see how it would go, no one, not even them, had an idea of how it was going to go. And self-admittedly no one could tell how it was going to go. So to think that we're going on a world tour next year and about 85 percent of it is sold-out already is just mind-blowing."