This is a Japanese layout model of the HHKB Professional BT. I have been using it for about a year since I purchased it, and it connects via Bluetooth. The body and keycaps have all been removed and cleaned. Also, it comes with a genuine hard cover and soft pouch, so it can be carried safely. - Model: PD-KB620B - Connection method: Bluetooth - Keyboard type: Electrostatic capacitive non-contact - Layout: Japanese, JIS - Color: Black - Country of manufacture: Japan - Accessories: Dedicated case