ThinkPad TrackPoint Keyboard II - Japanese Layout [Included Items] Receiver only. Box and instruction manual are not included. [Condition] There are no issues with key response or stand operation. [Product Specifications] Partially quoted from the Lenovo official website Layout: 89 keys (Japanese, JIS layout) Key Stroke: Approximately 1.8mm Key Pitch: Approximately 19.05mm (horizontal), Approximately 19.05mm (vertical) Connection Method: Dual Wireless Connection: Bluetooth 5.0 (Swift Pair compatible, supports Windows 10 or later only) 2.4GHz Wireless (via USB receiver) Supported OS: Supports Windows 10/Windows 7/Android 8.0 or later, Function buttons for operating Android newly added from F9 to F12 Charging Port: USB Type-C port Height: 12.39mm