JM-93 Digital Voice Metronome - Various Colours Colour:Pink USB Dual Pre is powered

USB Dual Pre is powered via the USB bus

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JM-93 Digital Voice Metronome - Various Colours Colour:Pink USB Dual Pre is poweredUser defined Timer: support the custom time of 1 90 minute zone tone, which is more convenient to formulate scientific practice time for children and help them form good habits. 9 Rhythms & 8 Sounds: including human voice and mechanical beat, etc., which help children to practice level changes and add interest. User friendly Design: 2. 1 inch LCD display screen, LED indicators, easy to adjust control buttons and knobs, type c charging interface, and