ABS and Aluminum Alloy Material: The semiconductor phone fan is durable and suitable for most mobile phones on the market. Powerful and Low Noise: Twin turbines and twin engines, strong wind supply, low power consumption with noise reduction. Dual Core Semiconductor Refrigeration: The heat dissipation speed is 50 times faster, great for continuous 10-hour live streaming. Energy Saving: The device enters intelligent saving mode, stop the fan rotation, and start the refrigeration every 90/s to save energy. Convenient Design: This cell phone cooling fan supports the modification of the bracket and supports charging while using. Spec: 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 Package List: 1 x Phone Cooler 1 x Specification 1 x Charging Cable 1 x Screw HeadConvenient Design: This cell phone cooling fan supports the modification of the bracket and supports to charge the mobile phone while using, really practical. 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. 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. 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. 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.