I'm selling this keyboard because I've started using an English keyboard and no longer need it. I've confirmed that it works. Only the keyboard and box are included; the USB receiver and batteries are not. If you have a Unifying-compatible USB receiver connected to another Logicool device, you can also connect this keyboard. Please note that one of the stands on the back is missing. Dimensions: Height/149mm, Width/441.5mm Weight: Approximately 498g Keyboard: Full-size Keyboard layout: Japanese Batteries: AAA batteries x 2 Connection: Logicool Unifying protocol (2.4GHz) For more detailed specifications, please see the product page: https://www.logicool.co.jp/ja-jp/shop/p/k275-unifying-wireless.920-007722