Precautions for use: the tip of this product is composed of activated carbon, which can not be touched with water, otherwise it will leave stains; When using, you only need to directly touch the stained place with the tip of the pen, and then wipe it gently, the activated carbon will absorb the stains, and finally use the brush to remove the dust, and the lens can be cleaned | Practical design: this lens cleaning pen brush has 3 cleaning parts, namely a cleaning brush, a large cleaning head and a small cleaning head; The 3-in-1 cleaning effect can clean the lens more quickly and effectively, so that the lens is no longer damaged by dust, affecting the picture effect and lens life | Simple method of use: this lens cleaning brush has a telescopic button that can be applied immediately by gently sliding your finger; And 2 different types of cleaning heads are easy to replace, simply take them down and install them again; There are no trivial parts covers most cleaning functions | Small size and easy to carry: this cleaning pen for camera is only the size of a regular pen; Whether you are framing the field or shooting indoors, you only need to put it in your pants pocket | A wide range of applications: this lens cleaning pen is not only suitable for camera lenses, it can be cleaned for most optical lens, such as telescope, magnifying glass, mobile phone screen, etc.; The package comes with 3 camera lens cleaning pens, sufficient quantity for you to use and share, so that your photography work becomes smoother