The Samsung Multi-Charging Wall Charger is a three-headed micro USB cable that allows you to charge up to three micro USB devices at once, for example a Bluetooth headset, smartphone and wearable device. The multi-charging cable optimizes the total charge across the three devices, so that one of them doesn't get charged instantly while the others lag behind.
To use it, all you have to do is plug the USB end of the cable into the included wall charger head unit, before plugging the other end into the micro USB port of the device or devices that you want to charge.
The Multi-Charging Wall Charger is perfect for mobile device users and gadget-freaks who carry multiple devices and push them all to the limit. It's portable and small enough to carry around in your pocket, purse or backpack.