Sterilization Principle: According to the approved laboratory research, theultraviolet disinfection stick can kill 99.99% of germ. The ultravioletdisinfection lamp destroys the molecular structure of DNA (deoxyribonucleicacid) or RNA (ribonucleic acid)in bacterial viruses through ultraviolet rayswith a wavelength in the range of 250 ~ 270nm. Convenient to Carry: The size of the UV Sanitizer lamp is small. It is perfectfor home, office, school, hotel and travel. It is a handy design to use forphones, IPads, toys, keyboards, laptops, toothbrushes, remote controls, doorknobs, toilet covers, mugs, steering wheel. Disinfect Effectively and Quickly: UV sanitizer wand can make environment clean and safe ina short time. Simply sweep the UV disinfection stick across the surface. Easy to use: This germicidal lamp can be sterilized by simply pressingthe switch button. Warning Tip: Please don 't use this Ultraviolet Disinfection Lamp onpeople xe2 x80 x99s eyes and skin . Provide excellent after-sales service, if you have anyproblems with the purchase, you can leave a message, I will be very able toserve you Specifications: PRODUCT MODEL: UV STERILIZATION LAMP UV WAVELENGTH: 250-270NM RATED POWER: 2. 5W PRODUCT MATERIAL: ABS+PC PRODUCT SIZE: 55 X 45 X 155 MM PACKAGE SIZE: 65 X 100 X 195 MM RATED VOLTAGE: 5V PRODUCT COLOR: BLACK