Instruct: Classify Amazon reviews into positive or negative sentiment
Query: jerdon 1600w wall mount hairdryer

i bought some of this model in Nov 2010 and used only 2 for my self, the rest I made it as gift of christmas gift to local friends. just happened last couple days when I used it, it fired up in my hand. I tried to switch to turn off, but it did not turn off. I must unpluged the power cord right away. If this happen to my kid, I don't know how they can handle this situation. To save lives of my family, I pull off the other one and don't want to use it, also re-call the rest from my friends whom I gave to. To me, this product is no safe at all.