This is a portable and universal tuner used to tune guitar, violin, bass and ukulele. Made from good plastic material for use. This tuner is a good option for you to keep your instrument in tune. Get one before you run out of supplies. LCD display, better viewing experience. Features -Color: Black -Material: ABS. -Size: About 10.70X6.70X1.70cm/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 - Made of best and sturdy plastic material for durable and practical use. Worked as tuner and metronome, good helper for novice. - And the of the guitar tuner is very practical,you will easily put into your bag. - The product has creative outlook and simple design, which is practical for people to use. - When you need to use them in a way for a long time, the product will quickly become your good helper. - The product can be given as a good gift to your friends who like playing the guitar, which makes them feel happy all the time. Package list: 1 x Tuner 1 x USB Cable 1 x Audio Cable 1 x Chinese and English Instruction Manual