It is an universal tuner of twelve-tone equal temperament applying to guitar, bass, violin and ukulele; Compact, delicate, portable to carry, its colorful LCD screen birngs you more direct display and is convenient for your reading and recognition;  More sensitive built-in sensor compared to the common pickup device, 360-degree turning, all directions are convenient for reading, it is your best instrument partner; It means correct pitch when the LCD screen dispalys green.