Smartphones are an excellent way to store and listen to your favourite music, with one notable flaw: their rubbish battery life.
Embark on a long train journey, tackle a full marathon or attempt to work your way through the Bob Dylan back catalogue and the world is likely fall prematurely silent, which is why these new solar-paneled headphones from OnBeat could be a godsend.
Fitted with solar panels on the headband which connect to two lithium ion batteries in the ears, once connected to your phone, they'll charge it as you're on the move - providing the sky is doing its part.
The headphones are designed by audio engineer Andrew Anderson, meaning the sound quality should be good, too.
The OnBeat headphones are expected to retail at £119. You can get more information on their Kickstarter page here.