Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Really disapointed !

Poor beam, not even and weak. Twist to open/off. Seems difficult to turn it on/off with one hand. I don't think in an emergency everybody can have both hands to turn this flash on. When you get a focused beam then the head can pop off to become a candle light. I don't like this idea.High price, low run time. Different color got different price. Ridiculous!I want to use it to to light up the laser marked chips. It did the job poorly even my $1 cheap flash from Fry's can light up the laser mark for me to read. I'm really disappointed and don't know how to deal with it.Ben