Found a discussion on this motor, seems everybody is have the same issues with Specs, comments are plagiarized not mine.
From a guy who used a 4S motor.
It can be used with a 4s, but you must reduce the prop size so that you don't over-amp the motor and burn it up. And no, it definitely is not a 480 watt motor. I rather like these motors myself, lots of guys don't however.
Then comments by a guy who had tested the motor, the page with the data was no longer available.
It would seem that it is, at the most, perhaps a 240W-250W motor:
Hope this helps.