Casio Watch Store

I lost my watch and don’t know where so I need a new one ASAP.
I like Casio but there are so many to choose from.
I am looking for something in the $35 to $40 [US] price range or less.
Something with a count down timer and or multiple alarms [that could be used as reminders for taking medications or supplements etc.]
Any suggestions on model numbers?
I looked in Wal-Mart but their associates don’t seem to know the differences between one model and another.

i am in high school and cell phones are banned in our school
i have a casio databank watch for 3 years but the phonebook of 30 pages is not enough for me
i dont want a watch that imitates the features of a cell phone like sms, music player etc