London, June 25: What do you do if you are stuck in a field at a pop festival but there`s trouble ahead because your mobile phone`s battery is about to run out?

Thanks to a new gizmo, you now just need to face the music and dance.

Mobile phone operator Orange said on Tuesday it had teamed up with GotWind, a firm specializing in renewable energy, to produce a recharger powered by dance energy alone.

The portable kinetic energy chargers will be given a test run at this year`s Glastonbury Festival, the world`s biggest greenfield music and arts celebration that begins on a farm in Somerset on Friday.

Orange said the prototype chargers weigh the same as a phone and are about the size of a pack of cards.

Attached to the user`s arm, they employ a system of weights and magnets which provide an electric current to top up charge in a storage battery. This can then later be used to recharge the phone.

"We wanted to create a fun, engaging and interactive product which would encourage users to have a laugh while charging their mobile phone and at the same time test out a new energy-efficient prototype," said Hattie Magee, Head of Partnerships at Orange UK.

Bureau Report