This is a Casio PB-100 Personal Computer, an early programmable pocket computer from the early 1980s, discovered during a house clean-up. After replacing the battery, the device was confirmed to power on successfully, displaying the startup screen as shown in the photos. The PB-100 is an iconic vintage Casio model, representing the early era of personal computing and programmable calculators. It comes with its original soft case and a Japanese booklet titled “PC Winning Strategy”, which provides guidance on computer use. Please note that the booklet shows fading and age-related wear. Due to the age of the item, only basic power-on functionality has been checked. This is sold as a vintage collectible rather than a guaranteed fully functional device. Recommended for collectors of retro computers, vintage Casio electronics, or early personal computing history. 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. Heavy items may be shipped by sea, which may take 1 to 2 months to arrive. 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.