Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DEAD OUT OF THE BOX!

Ordered unit from Amazon because they had best price. Paid for 2 day shipping to get unit faster. Ordered on Jan. 13, came Jan. 15 started using Jan. 16 . Worked until Jan. 27. when unit kept giving error readings. Called Omron customer service , on phone over an hour , they could not figure why unit didn't work. Have to pay for return shipping and insurance. Am still without meter which my doctor says I need. Omron considered the best meter only when it works. Wanted better meter than I had and now have nothing. Thought Omron should send new meter after only 12 days rather then try to fix this one which I still don't have. I'm not happy, this is not a toy! Remember to always save the boxes things come in, easier to send back.