1. Effectively delay the aging of mobile phones and increase battery life 2. Rapid cooling with cold frequency, fever at the end, stuttering, dark screen, etc. 3. No button, close fit 4. Large area of vacant heat dissipation, metal conduction cold does not damage the phone 5. Support phone width 65-87mm 6. Small size, easy to carry 7. Power bank and USB charging head can supply power
