Item Type: Guitar Accessories KitMaterial: MetalTuner Power Supply Mode: Button Battery CR2032 x 1 210mAh (Delivered with Supporting Battery) 1Practical Tool: The string changer is a very practical tool that can help you replay the guitar easily and quickly. 2Finger Paddles: Finger paddles of different thicknesses can be switched in thickness at any time to match your music rhythm and style. 3Chord Diagram: The chord diagram is convenient for guitar novices to practice and carry, and will help you get familiar with guitar chords anytime, anywhere. 4Guitar Capo: The guitar capo can protect your guitar from any scratches. You can change the tone by sandwiching between the frets, which will stay tight without any buzzing. 5Guitars Strings: 18 guitar strings, smooth and balanced, are made of high quality materials.