Ultraviolet light to kill all virus and bacteria and to prevent infection, 5 minutes to quickly disinfect, 254+nm wavelength, 10000 hours UV light life, disinfect watch / jewellery / clothing by 5 minute and phone / key / remote control only in 10 minutes, toothbrush / eating utensil 15 minute sterilization, 0-40° C working temperature, -22-55° C storage temperature, USB power input interface, safe and environment friendly, 430g net weight, 250 x 210 x 155mm dimension.