This scale was a major disappointment. I was excited to order this scale, especially being a Weight Watchers member-- hoping to watch my progress at home.First, the scale weighed me fairly accurately when i stepped on it for the first time (it was around +0.5lbs). I stepped on a second time and it weighed me +2lbs. I stepped on a third time, it then read +4lbs! And yes, a fourth time showed my weight +8.5lbs!! All 4 weigh ins were done in the same half hour, with no food or drink to vary my weight.I then asked my husband to step on the scale and weigh himself-- and it sent up a "error" screen every single time he attempted to weigh himself. He weighs around 275lb, and has weighed that consistently for a number of years. I was VERY disappointed because this scale was supposed to be able to weigh up to 330lbs-- hence, why i got it!Thankfully, Amazon excepted my return easily... but it is making me think twice about ordering a weight watchers scale.