This is an "unused item" that was taken out of the box for operational checks. It works without any problems, and there are no leaks. The battery has been replaced with a new one. - The box is not included. - The calculator case has deteriorated due to long-term storage. (Please understand the above points) It will be shipped via Yu-Packet Post. Please purchase after understanding that it has been stored by a private individual. No pets, no smokers (including e-cigarettes) If you have any questions, please feel free to comment. Calculator Texas Instruments Financial Calculator financial Calculator Texas Instruments BAⅡ Plus Japan CFA CFP GARP FRM MIRR NFV