This isn't the easiest thing to use - the compromise between portability and size is OK, but it can be quite a job. You really need an assistant to hold this in the right location. The instructions (English), on stiff card, are only an approximate translation and are slightly amusing. It comes in a smart black box, and complete with a lanyard and a lurid pink carry pouch.
Having said this, once you have mastered the instructions and taken a 'reading' the results are extremely satisfactory. As to whether this is any better than much less expensive 'card' white balance systems is, in my opinion, somewhat questionable.