body fat/body water scale

We have a weight watchers one, I don't fully trust it since it has my body fat 10% higher than when I had it done with calipers. I have been using my trainers scale to track body fat, he has a professional model Tanita, it is spot on with the calipers that I have done every couple months. The weight on the weight watchers scale is within a lb from the weight loss center scale and my trainers scale, but the body fat and body water numbers I feel are off some.

I bought a bowflex scale and its extremely accurate! the body fat reader seems to be on point