Throughout my testing the stereo microphones did a surprisingly good job of picking up my voice. While they do not have the dynamic range of high end microphones they did a great job of picking up my voice even from a few feet away. The built in speaker is surprisingly loud and is great for quickly checking a recording. While the included ear buds are not that great the ability to use headphones to review recordings is a nice touch that many recorders leave out. The multiple options of cables and recording sources made available by them is nice to see with a recorder at this price. I found the included microphone to not be sensitive enough and often resulted in muffled recordings. I used another microphone I already had and it worked well.
Overall the ROCSUN recorder is a nice compact recorder capable of recording at good quality. The included accessories while being a nice bonus are not all that great. While I recommend the recorder, I would be prepared to buy better quality accessories.
If you are interested in purchasing this recorder it can be found here.