Possible Mazda 3 purchase.
 

I'm considering the purchase of a 2015 iSport. It drives well but there's something on the dash that I've not seen on any other 3. Does anyone know what that little silver box is below the air vent ​​​​​? I think it says SkyActiv but I didn't pay attention to it during the test drive. Any info is appreciated, thanks!
https://cimg7.ibsrv.net/gimg/www.maz...21e662cfc8.jpg