the AC adapter that comes has the article number:
ETA U90EBEGSTD in black or
ETA U90EWEGSTD in white
the included power supply delivers 2A, the power supply offered here (only 1A) for several other mobile phones, and is actually performed as an accessory to the N7000. Well suited for loading an S2, but not for S4!
At the Galaxy S4, I recommend to use the 2A power supply.
Charging time when offered products is long, especially if you have switched on the device, or even incidentally used.