This music metronome can ensure that your playing pace is right and accurate. Suitable for guitar, piano, Erhu and any musical instrument you play. It is a very professional music accessory. You deserve to have one. Features -Color:Blue -Material:ABS - Size: 6.90X4.00X14.00cm/2.71X1.57X5.50in -Power supply:USB cable(included) or 3pcs AAA battery(not included) - This digital metronome helps you develop rhythm, maintain , play accurately and increase your musical awareness. - It allows you to produce rhythms at a proper pace when practicing piano, drum, violin, guitar, bass, drum and other musical instruments. - It will be a practical present for your friends who are beginning to learn and practice a musical instrument. - Small and mini-size, and with clip-on design, this digital metronome tuner is easy to carry and store, and can be clipped on the music note. - The digital metronome is easy to operate and convenient to use, perfect for kids and beginners to use. Package list: 1 x metronome 1 x USB cable