It used to be that your most difficult decision was 1-, 2- or 3-ply.
Now there are a dozen variables with help in Japanese.
Guess wrong and discover the "shower" feature.
I got one too! a Daelim make/model but serves pretty much the same purpose. I find it especially useful in the winter, ahh the warmth, no more cold seats ;-) I saw mention of new models that are even voice activated and have a remote!