3 in 1 Functional Guitar Tuner Metronome.This item not only features tuner function, but also comes with metronome and tone generator function, all in one design gives you a better using experience. Adjustable volume ,big screen display and folding stand design,a metronome guitar tuner focus on details,greatly convenient your life. Digital Metronome Rechargeable Tuner Built strong and resistant for beginners and professionals on the road.No battery needed,once fully charged ,can be used for long time. Large Screen Display: This Tuner Metronome comes with a large LCD screen display,easy to read and convienent your practise,a must have for musicians and beginngers. Multi-function compact metronome ,enhanced display makes it easier to practice your rhythm and phrasing,applicable for practicing piano, violin, guitar, bass, drum and other musical instruments with electronic tempo sound.