With last week's announcement of the 'Wankband', a new wearable charger, adult video website Pornhub say they've discovered an environmentally-friendly solution to the often frustratingly short battery life of our gadgets.

The wrist-strapped device, which is still under development, generates and stores electricity, which can be used to charge your battery-starved gadgets with each up-and-down thrust performed while wearing it, according to its promotional video.

If you'd like to be among the world's first to quite literally pump for power, PornHub's safe-for-work landing page gives you the chance to sign up for beta testing.

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