Description This is a professional digital metronome, which helps you develop rhythm, maintain tempo, play accurately and increase your musical awareness.It allows you to produce rhythms at a proper pace when practicing piano, violin, guitar, bass, drum and other musical instruments. 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) -Perfect combination of digital and classical: This metronome has the unique pyramid shape and is popular with most musicians. -This electronic metronome has an accurate and easy-to-read digital LCD display that allows you to play your favorite instrument while rapidly turning the speed knob to adjust the beat speed. -This metronome is lighter than a regular metronome and can be powered by USB or batteries, making it ideal for any musician to carry around and practice on any occasion. -Suitable for classical, chromatic, electric guitar, bass, violin, ukulele, piano, drum set, woodwind and other instruments. -Adjust the volume control for louder or smaller beats, allows you to practice at night without disturbing others.Package List1 x metronome 1 x USB cable