CASIO Scientific Calculator fx-570s Includes: Hard case, Quick Reference Guide, Instruction Manual Purchased new around 1995 and stored unused for the most part. Operation confirmed. The instruction manual has some discoloration and stains, but there are no missing or torn pages. Please check the photos for the current condition and purchase only if you are satisfied. Please refrain from purchasing if you are overly concerned about minor imperfections, as this is a used item stored at home.