Pick up the playing music through the pickup, analyze its spectrum, and display it through the LED. SWITCH MULTIPLE SCORES: Voice-controlled sensing, beating according to the rhythm of the music. The pickup sensitivity is adjustable. It is composed of pickup, amplifier, single-chip microcomputer and LED and other components. Parameters such as display refresh speed, audio response sensitivity, sampling frequency, etc. can be set., Weight: 0.33951188348 Pounds, Manufacturer: Jaywool