About this item:
NOTE: Bluetooth PCB quantity is not limited, however, the Extra Bluetooth PCB do not include battery as the result of restriction to ship the battery and it is required to be "built-in" to the case. Thus, we can only include one battery for the first PCB in your keyboard kit order.
These are the extras for purchase with your QK65 R2 or QK65 Stone Age Edition. You cannot order only these items without purchasing the keyboard (QK65 R2 and Stone Age) and it will be canceled, if you do so.
From the manufacturer:
Bluetooth module and a battery