Rotosound AT-530 Chromatic Metronome Tuner. Combines two functions allowing you to practice pitch and rhythm at the same time. Compact, lightweight, robust and easy to operate. Works simply by clipping the devise on to your instrument. Easy to use, displaying the note when it is played clearly on the back-lit display, indicating how close you are to having it in tune. With this excellent functionality you can get perfect pitch every time. Designed to be used with guitars, basses, ukuleles, violins and violas.