The amazing flying belt - Din and Paul's adventures in South Africa and Namibia

The book series of "The amazing flying belt" tells you the amazing and wonderful adventures of Henry and his teenagers, sons Tim (17), Din (16), and Paul (18).
How they became rich after having endured bad experiences.
Chased by cruel enemies around the world who wanted to rob them.
How did they survive it?
Using Henry's magnificent invention of "The amazing flying belt."
Henry envisioned and designed a kind of machine that would be light and small enough so it can be worn on the waist. It would be full of tiny electronic and mechanic devices to enable one, a maximum of two people to fly unlimited distance at different velocities and heights.
It would be powered by a special device that converted the sun's solar energy into electricity. The user would never need to worry about any fuel for the flying belt.
For balance, the belt generated air pockets around the user to allow him to sit, stand, or lie down while flying. Another crucial device was a special container tied on each side of the belt that pulled out and accumulated the moisture from the air, even in arid conditions (this, of course, worked more slowly than in humid countries.)
It had many more devices - complicated and difficult to understand.
In this book - book two - Paul and Din are sent by their father Henry to sell part of Paul's treasure diamonds to South Africa.
Cruel people are trying to catch them and take from them their diamonds chasing them through South Africa and Namibia.
They rescue Margaret a wife of Martin a cruel criminal and her daughter Jane.
Martin and his gang are chasing all four people.
Their adventures and a surprise important finding are told in this book.