The suction cup design of this tuner pickup allow it to be used with any instrument that has a flat surface, like a guitar, base, violin, etc. The suction cup is attached to the instrument and as the instrument is played, sound is then transmitted to the tuner. A pickup is better in transmitting sound into the tuner than a built-in mic that always comes with a tuner. This is because a mic is more likely to pick up background noise that causes interference with the sound from the instrument.
( ~~ REGULAR LIST PRICE: $12.45 ~~ )