Small pocket size metronomes in a beautiful & durable plastic case with a snap on cover. Size: 6h x 2 3/4w x 1 5/8"d. The key can be removed and placed into the face of the metronome for transportation. Precision performance equal to a full size metronome. Range 40 to 208 beats per minute. Tempo is adjusted by sliding the weight up and down the stem of the metronome. Made in Germany! • MFSKU 836 • UPC 4008687836000