I purchased a self-made keyboard from a seller on Mercari. I practiced with it for about 30 minutes a day for a week, but I couldn't get used to it, so I'm letting it go. It's almost new, but please purchase only if you understand that it has been stored by an amateur. It's ready to use as soon as you connect via Bluetooth. I have confirmed that the trackball, rotary encoder, and all keys are functional. The key switches are Lofree ghost. One switch has been replaced with a white key switch that I had on hand (type unknown). This might be a good match for those looking for keyball, moNa, etc. - 17mm narrow pitch - Bluetooth wireless split keyboard - The creator designed the PCB and case themselves. - ZMK wireless drive type, which can use the same functions as roBa. - Battery: 400mAh - A metal plate is attached to the bottom of the case, allowing for MagSafe tenting. - Charging is via Type-C - Purchase price: Over 40,000 yen - Keymap can be changed, and I will provide the buyer with a manual and details on how to do so. Connection type: Wireless (Bluetooth)