The Motor in fact is a 500W, As you can see in the LCD when you put pressure and load on the motor the number that shows on the right hand side of the display can go up to ~650W electrically Max. That means your system can easily take up to 500W mechanically. (street legal laws) 

The brushless geared hub motor we use in our ENVO D35 is very high in performance and efficiency. Since we sell and service this bike all across north America, we need to make sure it follows all the laws and restrictions in every province.  https://ebikebc.com/less-is-more-6-reasons-your-e-bike-motor-should-be-500w-or-less/