Add 5,000 yen to the winning bid: Windows 11 Pro can be installed via Bootcamp. Add 10,000 yen to the winning bid: Windows 11 Pro can also be installed using the paid virtual machine software "Parallels Desktop 20". Add 5,000 yen to the winning bid: Mac version of Office can be installed. An Office account and password will be provided. If you make an immediate purchase without price negotiation, Office will be installed for free. Add 5,000 yen to the winning bid: Windows version of Office can be installed. Add 10,000 yen to the winning bid: SSD upgrade to 1TB is possible. Add 20,000 yen to the winning bid: SSD upgrade to 2TB is possible. ※ Product Description ※ Manufacturer: Apple Product Name (Model Number): MacBook Pro Retina [A1398] CPU: Core i7-4870HQ 2.50-3.70 GHz (4 cores / 8 threads) Memory: 16GB (16384MB) Storage (SSD): Ultra-fast PCI-e NVMe SSD 512GB Optical Drive: None Screen Size: Retina display 15.4-inch wide Resolution: 2,880x1,800 dots Wireless LAN: Built-in wireless LAN Keyboard: Japanese layout (with backlight) OS System: Catalina 10.15.7 / Windows 11 Pro 64bit ● Included Accessories AC adapter, built-in battery * Some accessories may not be genuine. ■ Product Condition Beautiful! The LCD color is in a beautiful condition. There is no coating peeling. The keyboard and palm rest are in a clean condition, with no fading of characters. There are some scratches on the top cover and bottom cover. The battery has been charged and discharged 95 times. The initial password is 1234. ※ Notes We will accept returns or exchanges for defects such as power not turning on or not starting. Other than that, we cannot accept returns even if there are reasons related to the product condition, so please refrain from purchasing if you are particular about the product condition.