Product Feature:
1. Absorb radiation and tranfer it into heat to reduce the hurt to your health.
2. Advancing material
3.Stylish and beautiful desing, do not influence mobile phone function and appearance
4. Also suitable for other high radiation products, like monitors
Using guide:
1. Attach the oval button on the mobile phone transmitter
2. Put the 2 circut button on the back of the mobile phone
3. Suggest to replace the old one when the metal area of the oval button become black
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