After observing the properties of soft ultraviolet radiation with a wavelength of 390-400 nm for several years, I became convinced that this radiation inhibits the activity of viruses and bacteria. Therefore, when the coronavirus pandemic began, the idea came to make a reliable protective mask.

The case is 3d printed from abs plastic and consists of several parts

These collapsible parts are used for a replaceable filter. You can change it if necessary. And the most important element is the UV decontamination module.

Here it is-inside the case. It glows and destroys viruses and bacteria. Of course this gadget contains a Li-ion battery, charger and switch. When you use this simple device, you can feel safe.