Features 4-levle LED light displays power, intelligent automatic shutdown in non-working state Built-in lithium battery protection IC with over-current, over-voltage and under-voltage protection The product has dual USB output, which has stable transmission performance 5V constant voltage power supply can be used as charging input power supply, matching charger is more than 5V1A Adopted of high quality electronic components, and accuracy process, ensure for the durability Specification: Item Type: Boost Module Input Port: MicroUSB (for Android port) Input Requirements: 5V constant voltage power supply can be used as charging input power supply, matching charger is more than 5V1A Output Port: USB Output Parameters: DC 5V1A/5V2A Material: Synthetic Cardboard Package List: 2 x Boost Module Package List 2 x Boost Module