Features: 1.Better Practice: 6 fret appearance together with retractable design has represented a real guitar to better promote the practice. 2.Easier Training: The display screen will show the chord and fingering, while the built in metronome supports beat customization. 3.Practical Usage: The quiet playing suits for training chords and scales, improving finger speed, further enhancing skills, etc. 4.Simple to Carry: Light weight and compact size add more convenience to the carrying, and the bag simplifies the storage as well. 5.Great Materials: Combining high quality ABS and metal materials, not easy to malfunction, also very durable for long term use. specification:Item Type: Pocket Guitar Material: ABS + Metal Colour: Black Battery Required for The Product: 1 x CR2032 3V 200mAh (Included) PackageList: 1 xChord Trainer 1 x Wrench 1 x Button Cell 1 x Storage Bag 1 x User Manual