Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not Impressed

I decided to finally "upgrade" from my 7 year old Norelco with dull blades to this model and have been very disappointed. Shaving with this model takes twice as long as my older model. It especially is difficult to shave longer hairs on the neck, I found myself getting impatient and pulling out a razor to quickly finish the job.