This wavelength has a fatal attraction of insects mosquito. Mosquitos are attracted to the light source, and then they will be trapped into the mosquito tray under strong cyclone. Powerful cyclone will make the mosquito dehydrated and died. It is no radiation, non-toxic and chemical-free, and is extremely silent, being ideal for the baby nursery or adult bedroom Safe for human health and environment. Powered by USB so you can connect this with an adapter, power bank, computer or any device with a USB port. It is very portable and perfect for indoor and outdoor. It can kill mosquitos or use for lighting All that you must do in order to clean and disinfect the electric mosquito killer, empty the tray with the dead in mosquitos. The device can be used for the indoors. Packing List: 1* Mosquito Killer