Features 1、MULTIFUNCTIONAL: The digital metronome tuner combines a tuner, metronome, and pitch generator into one, making it compatible with all instruments. 2、RHYTHM TRAINING: The digital metronome offers 20 rhythm patterns and 10 beat options, allowing you to have a clear understanding of different rhythm modes. It facilitates efficient and effortless rhythm training. 3、BUILT IN SPEAKER FOR VOCAL USE: The metronome tuner is equipped with a built in speaker that is perfect for vocal use. You can control the volume even when the sound is loud, or you can connect external headphones without disturbing your neighbors. 4、WIDE COMPATIBILITY: The metronome pitch generator is compatible with various instruments such as guitar, violin, drums, piano, zheng, pipa, and more. 5、EASY CARRYING: Compact and lightweight, making the rhythm metronome easy to carry and use in any musical setting, whether at home, in the studio, or on the stage. Specification Item Type: Digital Metronome Material: ABS Battery: 1500mAh lithium battery (shipped with builtin battery) Speed Range: 40 to 208bpm/min (±1%) Tuning Range: A1 (55Hz) to A3 (1760Hz) Tuning Item: 12 tone equal temperament A4 Range: 430Hz to 450Hz Compatible with guitar, violin, drum, piano, zither, pipa and other instruments. Size: 100 x 180 x 81mm / 3.94 x 7.09 x 3.19in Package List 1 x Digital Metronome 1 x English Manual 1 x Charging Cable