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)
Mineral treated glass for better protection on the face.
Full stainless steel band/case
Serial/band number on last link/lugs
Fliplock oyster bracelet, steelinox clasp.
Screw in crown
Luminescent hour markings/hands
Magnified quick-set date
Water resistant but not fully water proof.