1.What is the different between a "Swiss Movement" and "Japan Movement" watches?
"Swiss Movement", Swiss made Titonic ETA automatic movement (This engine is used for Rado watches and many swiss brand name watches)Sapphire crystal glass for better protection on the face.
"Japan Movement", Miyota automatic movement from Japan

2. How do you know it is swiss movement?
Screw the back of the watch, you will watch the manufacturer.

Description:

  Automatic movement 
  Hack mechanism (second hand stops when crown is pulled out to set the time ?standard feature on all genuine rolexes)
  Sapphire crystal
  Diver extension to bracelet
  Full stainless steel band/case (not stainless steel coated ?so will NEVER fade or wear!)
  Screws in the links not pins
  Solid back with green rolex sticker
  Serial/band number on last link/lugs
  Fliplock oyster bracelet, steelinox clasp, serial number on clasp
  Screw in crown
  Luminescent hour markings/hands
  Magnified quick-set date
  Water resistant but not fully water proof.