Metronome features electronic sound, tempo range 30 ~ 250 bpm and an accuracy of ± 0.3%. The recording unit offers the possibility of recording to the mono channel up to 13 hours of recording in the 16-bit/44.1 kHz quality and WAV format (but also plays MP3 files) and a built-in microphone with universal polar pattern and SNR 75 db, and 4G capacity. In data transmission it is necessary to use a USB that can be used for charging as well. The power supply is a lithium battery.