Heat Sensitive Thermal Mobile Phone Protective Case (Samsung 7 and 8)
1. Thermal colour changing belongs to physical changes, not a chemical reaction, so no harm to the human body.
2. As long as the temperature of the hand is higher than the phone protective case, the case will turn into a different colour and it will restore the original colour after cooling.
Applicable to mobile phone brand: Samsung
Model: Samsung 7 and 8
Packing list: Phone protective case * 1