Key switch... Membrane Keyboard layout... Japanese Connection method... USB receiver ◆Purchased new in 2022. There are no operational issues. It has been used infrequently and is in relatively clean condition, but there is some slight shine and signs of use... Please refrain from purchasing if you are concerned about this. ◆ Shipping from Fujisawa City, Kanagawa Prefecture. *Shipping is limited to within Japan only. *Please note that we cannot issue receipts.