Features: 1.ABS and Aluminum Alloy Material: The semiconductor phone fan is made of premium ABS and aluminum alloy, durable, suitable for most mobile phones on the market. 2.Powerful and Low Noise: Twin turbines and twin engines, strong wind supply, low power consumption and strong power design, with noise reduction, voice chat without interference. 3.Dual Core Semiconductor Refrigeration: The heat dissipation speed is 50 times faster, even if live streaming for 10 hours continuously, still has great heat dissipation. 4.Energy Saving: When starting, the temperature will drop to 5 degree to reach the preset temperature, enter the intelligent energy saving mode, stop the fan rotation, and start the refrigeration every 90/s to save energy. 5.Convenient Design: This cell phone cooling fan supports the modification of the bracket and supports to charge the mobile phone while using, really practical. specification:Item Type: Phone Cooler Material: ABS, aluminum alloy Weight: Approx. 167g/5.9oz Operating Voltage: 5V Applicable Model: 66mm/2.6in to 90mm/3.5in wide mobile phone PackageList:1 xPhone Cooler 1 x 1 xCharging Cable 1 xScrew Head