It is a very lightweight portable recorder.
Caution, do not compare to ZOOM H4N (much more complete but also complicated and heavier) or to SONY, 2.5 times more expensive.
The watchword here is simplicity of use.
It puts you ahead and register.
The absence of 24-bit is unfortunate but basically I do not care because the sound that comes out is good.
Here is a link to a piece of acoustic guitar that I recorded with the POCKETRAK cx:
Or here in youtube version: