Instruct: Classify Amazon reviews into positive or negative sentiment
Query: don't buy

The product is a cheaply built one. the on/intensity control knob is rather hard to turn, and seems to have a loose-contact feature built in!And there's no reflector to direct the rays of light, so that half the light produced by the LEDs get lost inside the casing.I went and bought a headlamp with red and blue LED options in addition to white, and like it way better.