Instruct: Classify Amazon reviews into positive or negative sentiment
Query: alarm clock

I previously had a Sonic Boom that gave a strong vibration and loud alarm. Tried this cheaper one. The power cord is removable, and comes loose when handling to set time, and wipes off what you set. You have to turn over to use switches, rather than program while it sits on surface. It is not as loud, and vibration not as strong. Should have paid extra to get the best.