Electromagnetic Wave Removal Device: Plug-in Earth Elmac Clean II Cleared the strictest Swedish VDT electromagnetic field standards overseas! Cuts 95% of electromagnetic waves and electric fields (electric fields) from keyboards and mice! The industry's first! Simply plug it into an outlet and ground it, and the Elmac Clean allows you to release extremely low-frequency electromagnetic waves generated by electrical devices such as computers and game consoles, allowing you to experience amazing effects! A typical household outlet is divided into 100V (hot line) and 0V (cold line). Elmac Clean detects the cold line with the selector switch on the main unit and releases extremely low-frequency electromagnetic waves (electric fields) generated from the target device (grounds to the cold side). In other words, from the day you install it, you can easily get closer to a natural environment without changing your current habits. (From the web) Retail Price Main unit: ¥19,800 Alligator clip cord: ¥880 USB cord not included.