Features: 1.Smart Chip Simultaneous Charging Via 4 Ports Built-in Smart Chip, Constant High Temperature, No Heat, Effective Protective Equipment 2.Fast Charge 4-Port Charger, Which Can Quickly Charge more→4 Devices At The Same Time 3.Multifunctional Protection Built-In Over-Current, Over-Heat, Short-Circuit And Other Functions To Ensure Stable Current Output 4.Universal USB Charger 100-240V Broadband Voltage, Suitable For Different Countries And Regions 5.Fully Compatible Widely compatible with various charging devices Specification: Product name: 3.1A 4USB travel charger (fast charge is not supported) Product material: PC fire retardant material Voltage and current: AC100-240V 50/60Hz 0.5A