This portable digital recorder from Zoom includes a variety of features that make it perfect for recording music on the go. The MRS-4 model comes with 4 tracks and 2 mic inputs, as well as MIDI I/O and 2 line inputs. It also includes an adapter, instructions, and a data card with 128MB of storage. This recorder is ideal for musicians and audio professionals who need a versatile and reliable device for capturing high-quality recordings.