Description: 1.With a rotatable screen reserving the most commonly used chords inside can help guitar beginners/ students to develop muscle memory for chords and is a perfect tool for finger placement exercise. 2.Equipped with genuine guitar steel strings help guitar players to build calluses, and the tension of the strings can be adjusted with the tool included in the package. 3.There is a metronome inside the device so players can learn the chords with a customized tempo. 4.It’s a quiet practice tool without guitar playing sound, so you can’t tune or strum it like a real guitar. 5.A handy tool for guitar learners who still want to practice during trips instead of bringing the huge guitar when you are travelling, you can carry this compact device to keep up your daily practice. Specifications: Type:Chord trainer Material:plastic Packaging Size:31.9*5.9*4.5cm Color:As the picture show Weight:0.255kg Place of origin:China Use:Chord Exercise Package included: 1xChord trainer A tool to adjust tension of strings Note: 1.Please allow 1-3mm differs due to manual measurement. 2.Due to the different display and different light,the picture may not reflect the actual color of the item. Thanks for your understanding. 1.With a rotatable screen reserving the most commonly used chords inside can help guitar beginners/ students to develop muscle memory for chords and is a perfect tool for finger placement exercise. 2.Equipped with genuine guitar steel strings help guitar players to build calluses, and the tension of the strings can be adjusted with the tool included in the package. 3.There is a metronome inside the device so players can learn the chords with a customized tempo. 4.It’s a quiet practice tool without guitar playing sound, so you can’t tune or strum it like a real guitar. 5.A handy tool for guitar learners who still want to practice during trips instead of bringing the huge guitar when you are travelling, you can carry this compact device to keep up your daily practice.