Spektrum Mega Solar 018112044Cool stainless steel, scratch resistant ceramics and waterproof up to 10 bar, the Spektrum Mega Solar is our sportiest radio controlled watch. The internal workings of the Junghans multi frequency radio controlled movement is powered by the energy of the sun. Not only has the Spektrum Mega Solar proven itself to be incredibly accurate, but is also an extremely eco friendly timekeeper requiring fewer resources.