FX_CG20 Casio Computer Co., Ltd. I bought this in advance because I heard it would be used in a university class, but I ended up not using it in class. I only checked that it worked, and it's been stored in a drawer for a long time. Only the items shown in the fourth picture are included (main unit, quick start guide, CD-ROM, outer box, cable). *Receipt and batteries are not included. The main unit is clean, but please note that the outer box, CD packaging, and the paper with information about the members site have many stains and scratches. #Casio Computer Co. Ltd. #FX_CG20