Lacoste12.12 Women's Quartz Watch - TR90 Case Quartz - Premium Sporty Fashion Timepiece

Is there a difference in quality with the rest of the models? or the difference in color only ?

what kind of battery does it take?

The watch shows silver tone hands with green crocodile, and the information says it is in gold. Could you tell what color is it? Thank you!

Is the strap changing color to yellowish overtime?