Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wristech Blood Pressure Monitor

This product is cheap and you get what you pay for, I just tossed mine in the trash after only having it for a week. It is NOT accurate at all. If you check your blood pressure three times in a row; you WILL get three different readings. Not acceptable. The cost to ship it back is almost as much as it cost to buy it. DO NOT waste your money on this monitor