The Matrix MR500 Metronome is a quartz metronome offering tempo options ranging from 40 to 208 BPM (Beats Per Minute). Ideal for musicians and students, it provides precise timekeeping for activities like rehearsals and sight-reading. The MR500 includes an A=440 Hz reference tone for tuning instruments to the same pitch in ensembles. An LED light, along with an audible tone, indicates the set BPM tempo. You can deactivate the tone and keep the LED light on for silent operation. Additionally, it comes with a built-in 1/8" earphone output jack for monitoring tempos using standard headphones.