Features Size: 1 1/2 x 2 1/8 x 4 5/8". Wood cover that is hinged and snaps shut... securing the metronome. Fits comfortably in pocket or handbag. The winding key can be removed and placed into the face of the metronome for transportation. Winding the metronome allows up to 20 - 30 minutes of sound. Range: 40 to 208 beats per minute, set by sliding the metal weight up and down the stem of the metronome. Face of metronome has tempo markings such as andante - largo. Black Case- Matt Black wood finish. Made in Germany. 1 year manufactures warranty... Plus a 2nd year from us.. Very accurate, yet one of the smallest keywound metronomes available. To change the tempo of the metronome, simply slide the metronome weight up or down. Metronome markings are easily seen on the face of the metronome. The metronome wind up key can be removed from the side of the metronome and placed in the metronome for storage when the metronome cover is used. Extra metronome keys and metronome weights are available.