Instruct: Classify a review into positive or negative sentiment.
Query: USE AT WORK EVERY NIGHT

LIGHT LIGHT. AS IN LIGHT WEIGHT. AND ALSO VERY BRIGHT. I'M A NIGHT WORKER OUT IN THE OIL FIELD AND IT IS SO COMPLETELY ADEQUATE FOR THE JOB. IT'S EASY ON BATTERIES. IT USES THREE TRIPLE A'S MAKEING IT VERY LIGHT WEIGHT TO WEAR. IT HAS THREE BRIGHTNESS LEVELS THE FIRST ONE BEING MORE THAN ENOUGH. THIS IS A GOOD DEAL. I'VE USED IT ABOUT SIX MONTHS NOW. WOULDN'T KNOW WHAT TO DO WITHOUT IT. I GUESS I'D BE FUMBLING AROUND IN THE DARK.