Usage You just need to take this product around your hand or hang it on your key buckle, and then it will fully automatically eliminate the static electricity.Test method: To verify the effectiveness of the product function, please contact ordinary television screen or computer screen to identify, Result is distinct when turn on or turn off the machines.Built-in non-touch static discharging moduleHigh-light displayPatent Number: CN200620016935. X0.2 seconds to eliminate your static electricity troublesFeature:Wide: Covering an area within a 10cm-30cm radius around this product which can be used for human body, vehicle, electronic product, hardware, etc. (The actual service range depends on the static strength)Fast: Static electricity can be eliminated within 0.2 secondGood effect: Completely clear up the static electricity hazardsSafety: This product is absolutely safe without any poison and hazard