Dual USB A ports with 1 amp capacity 1 micro in the middle for charging.

Supports Pass Through Charging , Charge mobile Along with battery.
Charging Voltage/Current:DC 5V/1000mA, USB Output Voltage/Current:DC5V/1A-2.1A.
Conversion efficiency: 90% to 97%.
Charging Interface:Micro USB port.
Complete Function: boosting,lithium battery charging,undervoltage protection,output short circuit protection,cellphone charge identifying circuit.