[PRACTICE TOOL] Built-in rotatable screen, can retain the most commonly used chords, can help guitar beginners develop chord muscle memory, is a tool for finger placement exercises. , easy to carry and practice. [STRINGS] Exquisite craftsmanship makes it durable, no noise and interference, using steel guitar strings, the tension of the strings can be adjusted, convenient to use, and it has stable working performance to meet your needs. [BUILT IN METRONOME] With a built-in metronome, players can learn the chords with yourself customized tempo, better improve guitar chord skills. It's a quiet practice tool without guitar playing sound, so you can't tune or strum it like a real guitar. [IMPROVE SKILLS] The pocket guitar is a great tool for training chords and scales, gain finger quickness and building callouses, even further to improve your guitar skill.Perfect for beginner, children or professional guitarist. Colour:Gray Material:ABS+Metal Size:11.5x3.8cm Package Contents: 1 * chord trainer 1 * protective bag 1 * button suitable battery 1 * string distance adjustment wrench 1 * Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.