Feature:With universal socket, more convenient to use in any time, any place. Each layer is equipped with an independent switch to protect your appliances. With handle, the portable is safer and avoid contact with jack directiy. Standard grounding breaking technology, perfect design and ultimate security experienceMulti-layer isfree to choose according to different needs. USB port quantity:3Specifition:1.Material: ABS plastic2.Built-in 3 port charging phone via USB: 5V - 2.1 A 3.Current Rating: 10A4.Voltage: 250V5.Power: 2500W With overload Protection6.USB Input: 250v - 200mA7.DC Output voltage for USB: 5V 8.DC Output current for USB: 2.1A