Product Features *Heating by PTC,high heat efficiency,long life *Microcomputer control,more convenient. *3kinds of operating mode: Natrual wind, low and high temperature. *Wide-angle wind of left-right swing. *Timing setting of 1-7H *Fall power-off protection. *Multiple Protection for overheat or overcurrent. *ABS Flame retardant material for safety *Low noise, not disturb sleep.