Eatsmart Getfit scale. Review say it is very accurate for bodyfat, but it is wayyyyy off for me?

Killmenext

Hello all, I just got the Eatsmart Getfit scale, and it seems like it would/should be awesome, but it seems to be really off? I bought it, and a clamp style bodyfat measuring tool. The scale comes back saying I am only 10% bodyfat, then today 9.8%. Yet I am easily over 20% according to the clamp thingy. Anyone else have or use one?