2 in 1 Clip-on Digital Tuner Metronome MT83W for Guitar Bass Violin Mandolin Viola Cello Ukulele Banjo Big Sound Loud Beat Tempo w/ LCD Display This product is a 2 in 1 functional Guitar Tuner.It is not only a tuner,but also a metronome. Backlight and LED indicator making the tuner easy to use in dark situation. Small size and portable for you to carry everywhere. It swivels into 360 degree angle which is easiest for you to read. Clip on Design,big LCD Display,more comfortable for you to handle.