Wow. What a terrible purchase. 
I installed water filters in my home, so this should not have been a stretch, but I could not get the parts to fit; I had to pay someone to install it for me. 
Once installed, it leaks water all over the floor from the handle. 
I had a bidet that cost 20 dollars for years and it worked better than this. And of course, no replacement and no refund. 
I will not buy this brand or from this site again and will advise others to do avoid both also.