The solar-powered lamp and charger has been chosen as the fourth contender for the 100th Object of the World.
On Radio 4 this morning, the Today presenter Evan Davis inspected "a plastic and metal object that's about 15 centimetres by 10 centimetres".
As long as the sun shines, this object provides. It’s a life-changer and not just for a few of us. It could alter and secure the existence of billions.