Thank you for viewing! This item was made through woodworking and fretwork practice. The wood is wenge, and the frets are Freedom SPNF04. The cord is FUJIYAMA RIBBON cotton cord, which is flexible and very comfortable to wear. It feels as secure as a Pacifica guitar, to give you an idea. The cord is set to a long length, but if you want it shorter, please untie it and re-tie it to your desired length, then cut off the excess cord. Also, if the cord becomes twisted or creased with use, it can be restored by lightly dampening it and drying it with a hairdryer while stretching it. This product comes with a ball chain. You can remove the cord and attach the ball chain to use it as a keychain (the image of the ball chain in use is just an example. The product in the image is not included, so please understand). I have taken care to ensure there are no burrs on the fret sides, but as with regular guitars and basses, the wood may shrink over time, and burrs may appear. Please be careful not to catch it on your skin or clothing. Considering that this necklace will be in constant contact with skin and clothing, I have applied tatara water-repellent ceramic multi-coating as a finish. This is a paint that can also be used on wooden tableware, and it enhances water repellency, waterproofness, and stain resistance without compromising the texture of the wood. *However, this does not guarantee that color transfer to clothing or skin problems caused by the natural components of the wood will be completely eliminated. Color transfer to clothing may occur depending on the usage environment. *To avoid skin problems, please wear it over clothing as much as possible to avoid direct contact with the skin. Also, please be aware that there is a higher chance of developing symptoms such as rashes if it gets wet with sweat or rain. *Please check beforehand to make sure you do not have any skin reactions before wearing it, and discontinue use immediately if you feel any abnormalities. As this is a handmade item, there may be some areas where the precision is not as high as commercially available products, but please understand this. How about it as a small My new gear for yourself? If you have any other questions, please feel free to comment. #guitar #acousticguitar #electricguitar #electricbass #fretboardnecklace