system
A chat on subreddit /r/me_irl
human
Yeah mine came with all the fittings, just install it under the seat. Also has different settings and pressures.

I'm sure yours is fancier/nicer, but if you're broke like me at the moment there's some cheaper options in case anyone's looking.
gpt
Mine is heated. Seat is heated too.



Kind of required in the PNW where the tap water comes out near freezing.