This is a vintage CASIO fx-11 scientific calculator, complete with its original AC power adapter. The unit has been operation-tested, and the fluorescent display, scientific functions (sin, cos, tan, log, ln), and numeric inputs are all working properly. This model is from the late 1970s to early 1980s, featuring classic CASIO design and a bright green display. It shows expected signs of age—minor discoloration and surface wear—but remains in good functional condition. Contents of the lot: CASIO fx-11 scientific calculator Original CASIO AC adapter A great item for vintage electronics collectors or for those who appreciate early scientific calculators. Method of Shipment FedEx or Japan Post NOTICE The lot will be carefully packaged and shipped by FedEx or Japan Post. Delivery usually takes 1–2 weeks. The shipping method may vary depending on the item price and size. Sometimes Customs or the delivery company in your country may contact you by phone or email for clearance. Please make sure you are available to respond. If not, the parcel may be returned to me, and reshipping will cost more than twice the original shipping fee. I appreciate your cooperation.