This item was purchased in June 2024 for 20,889 yen (including tax). It has been opened, but is not being used, so I am selling it. Operation has been confirmed. Brand: KORG Number of Keys: 61 Connectivity Technology: Bluetooth, USB Model Name: Wireless Connection Compatible MIDI Keyboard microKEY Air Product Dimensions: 13.9 depth x 85 width x 5.4 height cm Size: 61 keys Connection Type: Wired/Wireless (Bluetooth)