1)Capacity: 4000mah 2)Charging circuit built-in, no more external AC to DC adapter and AC cord 3)Compatibility: Compatible with today's most popular brands of gadgets such as, Apple, HP, Motorala, Nokia, Samsung, Sony, 4)Camppact, slime, and light 5)LCD display indicates all status. Specification: 1)cell: Lion Plolymer 2)capacity: 3.7V 4000Ah(output voltage is adjustable) 3)Output current: 700mA \4)Input Voltage: 100-240V 50-60Hz 5)Input current: 0.2A Input voltage at 100V 6)Charging current: 1000mA 7) charging time: 5 hours 8)Protection: Over charge, over discharge, over current, and short circuit 9)Cycle life: More than 300 10)operating temperature: 0-40 11)Storage Temperature: -20- 50