In concept, I think the ideal combination. Four sockets and two USB ports should be enough to satisfy even the holiday most power-hungry travelers. Phone, tablet, laptop, camera, battery charger, ... - I did not make it a holiday to occupy all 6 places simultaneously. However, it is definitely more compact than a normal power adapter plus power strip, whatever was my standard equipment in previous holidays.
Unfortunately, now comes the downside of this great instrument per se: It is too small. At least that is the impression I have after two ordered devices. The first came with me already broken. It rattled because the internal parts were loose and after closer examination it turned out that the cube was screwed from one side with four long screws. But the interior of the cube appears to be too large for the shell, because around the casing to close completely, you have to squeeze it by brute force. This apparently have Kunsstoffgegenstücke the screws not endured - all four were uprooted. I have no need for an exchange and attempts to repair it yourself. Since that did not work, I ordered a second unit and unfortunately had to find that it also does not look at the much better. Also this rattles - so it's at least one screw also been uprooted - though it still holds together, so that I have dared to take it on holiday.
Bottom line: If it holds and how thought works, there is an ingenious part of what five stars earned. However, if this is a fundamental design flaw, because simply too much content has been housed in the cube, then that is unusable hazardous waste.