PRODUCT FUNCTION Ultra-Fast Cooling uses high-performance semiconductor refrigeration technology for very strong heat dissipationThe maximum temperature drop is up to 40℃.Design with a 7-blade high-speed fan and super large TEC, it takes only 30 seconds to reduce the temperature of your phone to 0°C in a 25°C roomNote: It needs to be plugged in and comes with a Type-C cable Ultra-quietThe Semiconductor Heatsink radiator Noise-Reduction design allows you to comfortably watch games and videosSince the Ultra-quiet, it is also recommended at the time of the voice chat and live broadcast Vertical Air Duct DesignWe focus on the actual user experience, this vertical air duct of the phone cooler 4 Pro, an innovative and ergonomic design, makes a comfortable hold without letting heat dissipate to your hands RGB Lighting Cooling Fan features dazzling RGB lighting effects and two sets of lighting modes to create a strong gaming atmosphere Customize your look with various RGB colors and lights ting effects Universal CompatibilityThere are two fixing methods: magnetic suction and back clamp. The phone cooling fan with the retractable clip fits almost any smartphone, whether you're gaming on Android or iPhone and iPad The Phone cooler supports devices with a width of 2.59-3.46 inches