4.Ultra Violet (UV) Light is invisible to human eyes. It can be subdivided into three categories: UVA, UVB and UVC. The wavelength of UV-A from 315 to 400 nanometre, UV-B from 280 to 315 nanometre and UV-C from 100 to 280 nanometre. Our Handheld Foldable Ultra Violet Sterilizer has been found to be extremely effective device and can kill over 99.9% of the DNA or RNA of bacteria, virus, germs and micro organism in an extremely short amount of time of 10-20 seconds with a distance of 5cm. The wavelength of this UV Sterilizer is in between 260 - 280 nm which is sufficient for killing micro organism. It can also be used on objects like Digital surface, Kitchen surfaces & utensils, Personal items, Bathroom fixtures, Children & Baby items, . It is CE approved and highest accuracy product. 100% hygienic and easy to use. Furthermore, you can purchase this Handheld Foldable UV Sterilizer from us at pocket friendly price. It may be used to reduce cross-contamination risk and minimize the risk of spreading disease. It has tilt sensor it gets automatically off when it is pointed upwards when in on condition this has been provided to protect your eyes and skin from accidental exposure.