(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)