This product requires 2 AAA+ batteries.
Green color is recommended! The effect of violet pen is purple or blue, the effect is weak, it is best to use at night! Violet pen irradiated on the surface of the paper is easy to turn blue is mainly due to the light scattering and absorption properties, when irradiated on the surface of the paper, the light will be scattered phenomenon, different wavelengths of light in the scattering of different performance! When first used, too low a temperature may cause the product not to work, if this happens, you can first leave it at room temperature for a period of time.
This is a low power pen, it is impossible to make every light source the same at the factory, there may be side light, but it does not affect the use, please understand!
Due to screen and light differences, the picture may not reflect the actual color of the real thing. Thank you for your understanding.
Packing List: 1 x Pen (without battery and retail packaging)
