Portable and Quiet Cell Phone Cooler: This cooling fan prevents the phone from overheating while playing the game console and watching videos , extending the life of the phone and battery. It hold on your phone by clip, so you don't worry about the cooler getting lose after long using or slide off when you're using.Semiconductor Refrigeration Technology: Compared with other coolers, this radiator cools your phone in 3 seconds. It can effectively solve the problem of fever or power failure when using a mobile phone.Lightweight and Small Size: 2.83 x 1.41 x 0.74 inch, 0.15lb. There is silicone mat on the edge of the cooler which firmly absorbing the phone to avoid the phone falling off and scratching.Plug and Play: Easy installation on your phone by clip, it works for Andoid and iPhone smartphones in 4.5-7 inches. USB plug-in design All the adapters with USB ports can be used normally when plugged in and turned on.