Descriptions: - 300000mAh high capacity mobile charger external battery power bank - Dual USB ports, you can charge phones, pads or other small electronic devices simultaneously - LCD display screen, intelligent display subtitles, battery capacity can be accurate to one percent - LED light, press the switch twice, the LED will light up, works perfectly in darkness, especially for emergency - Intelligent circuit connection charge, connected devices automatically recharge, power automatic shutdown, efficient fast charging - Automatic identification of charging equipment, adjusts the output current - 7 intelligent security protection, fast and safe charging - The battery has passed the MSDS ( Material Safety Data Sheet ) Parameters: - Input: DC 5V / 1.5A ( max ) - Output: DC 5V / 1A, 2.1A ( max ) - Material: ABS Product Size(L x W x H): 143x74x13mm Package Contents: 1 x Power Bank 1 x usb cable