Description Are you looking for a professional, yet affordable guitar tuning metronome? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional guitar tuning metronome must meet you needs. It is one of the best choices for you. Features -Color:Black -Material:ABS. -Size: About10.70X6.70X1.70cm/ 4.21X2.63X0.67in -Battery: 400mAH 3.7V -Range of sound correction: A0(27.5Hz) - C8(4186.0Hz) -Range of A4: 430-450Hz - Velocity: 30-250bpm -It is made of sturdy plastic material and has a long service life. Color display, more clear and intuitive. - The three-in-one guitar tuner can meet your different needs. Professional musical instrument accessories. - With the small size and the light weight design, it is convenient to carry. Fine workmanship and good quality. - With multi-function color display, it brings great convenience to your use. Simple and convenient to use. - This is a suitable holiday gift for guitar students, they will like it. Tuning, suitable for various musical instruments. Packaging list: 1 x Tuner 1 x USB Cable 1 x Audio Cable 1 x Chinese and English Instruction Manual