MC0299W Features Perfectly fits for Samsung Galaxy S3/S4， Note1/2， Sony and other mobile phones and tablet pcs with Micro USB port Compatible with smartphones and tablet pcs with OTG function Comes with OTG interface Dual USB ports (one for data transmission， another is OTG interface， you can connect  mouse， keyboard， or U disk and other USB devices connected to the smart phones) This item cannot be used when using OTG function and charge state data General Specs Type Charging Dock Compatible Models Samsung Galaxy S3 / S4 / Note 1 / Note 2 Output Current 1A Output Voltage 5V Input Current 1A Input Voltage 5V Material ABS plastic Package Details Weight: 53.50 g Size: 8.5*6*3 cm