Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Inconsistent

My husband bought me this scale as a birthday present. I have two complaints. The scale is 2-3lbs off (it underweighs). But, that's not all...The scale is inconsistent. You can step on it two different times in a ten minute spread and get two different weights. The weights usually vary by .5-2lbs. This scale's time is up. Time to shop!