減低辐射不容有缓 - Protects computer user's health - Easy to install using USB port - Small and portable - Significantly reduces radiation around computer and accessories that are connected to the computer - Eliminates over 95 percent low, intermediate and high frequency electro magnetic radiation emitted by computer Product Warranty : One Year period warranty given by shop One to One exchange upon found faulty device No Warranty if device broken cause by human mistake. No Warranty if device drop or water damage.