Reducing the need for batteries in electronic gadgets by using alternative power sources is one of the ways we can help to save the planet, but these wind-up walkie talkies could potentially save lives too.

This kit includes two two-way radios that are powered by a wind-up mechanism, so there's no need to worry about batteries running down in an emergency situation or simply just when it's important to stay in touch. They can also be charged via a mains adaptor and topped up using the wind-up crank to ensure optimum performance and the longest possible usage time.

They're a great fun way to stay in touch when out in the wilds, for kids on secret missions in the back garden or could even to co-ordinate staff at corporate events - no batteries means one less logistical issue and cost to worry about!