1.The mobile phone radiator uses semiconductor refrigeration technology, and the heat dissipation effect on the back of the hot mobile phone is very fast, and the temperature of the mobile phone can be reached to 10 degrees Celsius in only 30 seconds 2.Mobile phone cooler can adjust the fan speed, you can display the temperature at any time, play games, live broadcast, choose your favorite lighting effects and colors, very atmosphere 3.The phone cooler features noise-cancelling technology so you can comfortably watch videos and play games. Because it is very quiet, it is also recommended that you use it when broadcasting live 4.Retractable phone cooling fan for 2.6-3.5 "wide Apple and Android smartphones 5.Mobile phone radiator can be used as birthday gifts, gifts, etc. to family friends and children.