I bought this product on the recommendation of a family member.  I really love it.  It was super easy to install.  I wish I had done a little more research on Bio Bidet products because I might have bought a different model, but I am still very happy with it.  NOTE - this one - and all the others I have seen - are not the best fit for my 1920's model toilet, because the back of the bowl is so small compared to modern toilets.  But it sure works great!  I have already recommended it to friends