You need to have an outlet installed next to it and the length of the power cord is 70" (1.8 meter)
It measures 5.5" center to center
The seat is a separate unit from the toilet base so yes you can replace it but then you're replacing all of the electronics as well.
Yes the toilet actually comes in two boxes. The toilet comes in one big box and then the bidet seat comes in a separate smaller box. The big box also contains a regular toilet seat which you won't use.
The toilet bowl height is 15.5" and the height for the bidet seat is 1.5" so the height from floor to seat is 17"
No It doesn't seem to. We ran a dedicated circuit for the toilet.
They are 2 position settings - Posterior and Feminine
The cleansing wand is removable
It is 26 PSI
Step by Step installation instruction for toilet and user manual for bidet are included, it takes 40 - 50 minutes for an experienced handyman to install it. We strongly recommend to have 2 persons to install it because toilet is heavy.