（1)AC input voltage: AC110-240V
（2)4V/1650mAh sealed lead-acid battery
（3)With 19 super brightness & longevous LEDs at the top of the head
（4)With 24 super brightness & longevous LEDs at the side
（5)Charging time: about 15 hours
（6)Emergency duration: about 6 hours (19 LEDs) 18 hours (24LEDs)