Features:
Upgraded one-key guitar chord practice tool specially designed for 36-41 inch folk guitars, and 43-45mm wide of first fret is proper.
Supports 9 universal chords and 15 extended chords, which is suitable for almost all of popular songs.
Simple to use, just press the button with chord name, then you can play the chords of the songs easily.
An ideal assistant tool for folk guitar, and allows beginners to learn guitar chords quickly and play the guitar without pain.
Not suitable for left-handed, 12-string, half-sized(Children's) classical and electric guitars. Please measure your guitar neck before ordering.

Specifications:
Color: Black
Universal Chords: D, BM, F, C, G, AM, EM, DM, AM7
Extension Chords: cmaj7, csus4, Asus2, Bsus2, E, D#, C#, C#M, A#M, CM, Dsus4, Esus4, Am/c, F6, G#

Packing List:
1 * Chord Trainer

The chord learning tool can help you to learning the chords by the different colors button, easy to remember, no pain for your finger.

Features:
The guitar chord practice tool is easy to install in one clip. Hold down multiple strings with one click.
Nine universal chords, with these chords, you can playing more than 90% of popular songs.
Adults or children, young or old, anyone can quickly and easily learn to play-guitar.
As soon as the guitar learning system is properly attached to your acoustic or electric guitar, you will be making music. Begin playing from the minute you attach.
The guitar practrice aid is suitable for most brands of folk guitar between 38 inch to 41 inch.

Specifications:
Color: gold, silver, black (optional)
Material: plastics+metal
Item szie: 140 * 80 * 50mm / 5.5 * 3.1 * 2.0in
Item weight: 85g / 3.0ounce
Package size: 150 * 90 * 70mm / 5.9 * 3.5 * 2.8in
Package weight: 130g / 4.6ounce

Packing List:
1 * Chords Teaching Aid