MRCO Cajon pickup. This pickup is inserted into the cajon body through the sound hole, and the built-in microphone picks up the sound, which is then output via line to an amplifier, PA system, etc. Line out (phone x1, XLR cannon x1). Power is supplied by battery or phantom power via a cannon cable from a mixer or DI. H9.5cm W6.5cm D3cm. Instruction manual included. Operation confirmed.