The adapter makes me an overall good quality impression. Unlike similar device sheep in my possession the light gray plastic case is slim and lightweight, which makes it easier on the one hand the use of power strips, and on the other hand makes the transportation more comfortable. Also noteworthy is the almost 2 meter long cable which hardly restricts the freedom of movement even in mains operation. (Unless one is not on the road ...)
Besides the fact that you have to buy it at all, it indicates the device so really nothing to criticize.