Features: 1.It adopts the technique of high-frequency UVC which has the highest sterilizing efficiency. It is harmless to human body. 2.With a children safety lock. 3.Automatically cut the power when it stops working. Functions: It can thoroughly kill the bacteria and virus including Escherichia coli, golden staphylococcus, bacillus subilis dark mutated spores as well as mildew source substance, hepatitis, flu and other viruses which would give rise to diseases. As a portable substance surface sterilizing apparatus with superexcellent properties today,it takes effect only in a few seconds. The apparatus can be used for sterilizing the surface of dishware,personal articles, public goods, children's toys, computer keypads and mouse key, currency count machines, auto interior, drinking water, toothbrush, telephone sets, lock handles and many other articles and in the meantime it has the function for identifying the fake currencies. Range of wavelength: 185-260nm(peak value:253.7) Bacteria-killing rate: 98-100% Work Temperature: 5-40centigrade Relative humidity: 10-75%RH Power supply: 4*AAA batteries Volume: 50*35*130mm Weight: 65g(without batteries)