What are the functions of a smart voice recorder?

What are the functions of a smart voice recorder?
The main function of a voice recorder is to record voice, and the strength of its recording function
is crucial. The common recording methods for the voice recorder are mainly divided into two forms:
built-in and external microphones, while external microphones are divided into wired microphones and
wireless microphones. External microphones have better recording effects due to their high
sensitivity.
The selection of recording pens mainly includes the following points:
1. Recording effect;
2. Recording time;
3. Play sound quality;
4. If these four conditions are met, such as recording distance, it can be called a multifunctional
recording pen and MP3 player function.