If I was able to see inside of the toilet tank, I would not have purchased it. It has many mechanical parts and hardly any water is in the tank to flush due to all the space the parts take up. the handle is too low and you have to hold both the green handle and the silver handle in order for it to flush. It doesn't flush unless you hold the handle down for 45 seconds at least. The plumber that installed it had never seen a toilet like this one before and said he would not know how to fix it if any of the parts inside the tank were to break. Would have returned it if I could.