Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Weight can vary by up to 3 pounds; get "ERR" half the time

This cheap scale gives me a different reading by a pound or two or three if I just move it to a different spot on the floor.Even more annoying is about 25% of the time it can't get an accurate reading and just says "ERR" then I have to shake it and try again.