This is a compact, lightweight keyboard that's easy to type on, making it a comfortable model for everyday use and work (released around 2019). Please feel free to ask if you have any questions. ◆ Main Specifications Manufacturer: Lenovo Model Number: ThinkPad X390 (20Q1-S5DK00) CPU: Intel Core i5-8365U (8th Generation / 4 Cores 8 Threads) Memory: 8GB Storage: NVMe SSD 256GB OS: Windows 11 Pro 64bit (Initialized with the latest updates) Screen Size: 12.5-inch LCD (Please check the photos and specifications for details) Wireless LAN/Bluetooth: Yes Web Camera: Yes Interfaces: USB Type-C x 1, USB 3.0 x 2, HDMI x 1, etc. Accessories: Genuine AC adapter ◆ Operational Status ・Confirmed that basic operations such as Wi-Fi connection, browsing, YouTube playback, and web camera work without any problems. ・Keyboard and touchpad are also working well. ◆ Battery Life Estimate ・With screen brightness at 100%, Wi-Fi on, and continuous YouTube video playback, the battery went from 100% to 80% in about 1 hour and 25 minutes. Depending on the usage environment, you can expect to use it for about 5-7 hours in practical use. ・Please consider the battery as a consumable item due to it being a used product. ◆ Appearance Condition ・The characters on the Ctrl and Alt buttons on the left side are slightly worn. ・Both the top cover and palm rest are in relatively clean condition for a used product. ・There are minor scratches and scuffs from use, but there is no damage that affects operation. ・There are no major scratches or dead pixels on the LCD. ◆ Notes ・Due to this being a used product, please refrain from purchasing if you are sensitive to imperfections or are looking for a new-like condition. ・If there are any defects that are clearly different from the product description (different specifications, power not turning on, etc.), please contact us before leaving a review. We will respond sincerely, including returns. ・Returns and cancellations due to the buyer's circumstances (different from the image, no longer needed, etc.) are not accepted.