Caution

Please do not use it for legal documents, addresses, etc.
The handwriting will not disappear even if the changed color is further rubbed. It will not return to its original color.
Please use the pen upright as much as possible and with light writing pressure.
This product is disposable. Refills are not available.
Do not place in direct sunlight or in places with high temperatures. The ink color changes when the temperature exceeds 60℃.
At around -10°C, the handwriting may return to its original color.
Do not use for writing on anything other than paper.
Some types of paper, such as thermal paper, may not be suitable for use depending on the characteristics of the paper.
If you rub the rubber with dirt on it, the paper will get dirty. Please use it after removing the dirt such as wiping off. The color changes when rubbed with a special rubber.