Is the Schecter Synyster Standard a six string or a seven string?

I have been looking at this guitar for a while now and ive heard different things from different people regarding the string count on this guitar. I found a picture of the standard and obviously saw only 6. And also I have never owned a Floyd Rose tremolo guitar before and I was wondering how difficult it was to restring and tune it and about how long it takes on average. Thanks for the answers :)