The Sabine Zipbeat digital metrnome sounds in a loud, clear tone. With sccented downbeats on 2 to 6 beat intervals, polyrhythm practice is a breeze! Adjustable BPM, sweep led display, and a 6 setting tone generator tuner with a range of A 440Hz- 445Hz. Takes one 9 volt battery, and includes an earphone jack. Full two year warranty. $29.95