Ladies' Popular

The Casio "LTP" prefix designates a Ladies' Timepiece Popular model.
Here is the quick breakdown of what the letters mean:
L (Ladies): Sized for women's wrists.
T (Timepiece): Standard analog quartz watch.
F (Popular): Affordable, classic, everyday dress styles (typically with round cases).
In short, it is Casio’s line of classic, budget-friendly everyday round watches for women.