charger USB 5V 2A (10W so)

I wanted a micro usb charger for my raspberry pi which was under powered by the USB port of my TV (for the USB 2.0 Memory is supposed to give the 500mA and 900mA USB 3.0).
So I wanted a feeder 2 amps "brand" and I got to this choice. To avoid unpleasant surprises, I ordered from a vendor whose products are shipped by amazon.
On arrival, I think it's a real samsung charger, microphone cable CablesUsb made a meter long and is solid in appearance. The promised intensity is there, the raspberry pi works well, and can even feed 2 usb keys plus a Nexus 4 wireless sharing. For the moment, no overheating or oddity.