At first glance, Majik Water units don’t look like much. The smallest, about the size of a bar fridge, look ... well, like sharp-edged bar fridges. The largest are reminiscent of those chunky banks of airconditioning that accessorise the outside walls of older industrial buildings, only these are freestanding and usually on a platform under a tin roof.

What makes the units special – to the point of catching the attention of Swiss watchmaking giant Rolex – is their ability to harvest water from the air in arid regions, using solar power.