Usb phone fans in comparison

The Androids cell phones must with OTG function (How to Check OTG? Download free app "USB OTG Checker").

For Laptop tablet Wall with USB or port Can use for power supply.

Portable Fan room fan, which is very compact to be placed in living room, bedroom, office also it's a very powerful fan too, bring you the better cooling feeling in hot

12-Core Deep Cooling Fans The Trullypine F12 Laptop Cooling Pad is equipped with 12 high-speed silent fans, providing excellent cooling effect and temperature control, 360 degrees all-round dynamic cooling; The large metal mesh provides great heat dissipation performance. Four diamond-shaped groove designs bring better heat dissipation space, being built to accelerate heat dissipation.At the same time, these high-end laptop cooling fans are all equipped with capacitor components to reduce working noise, very quiet and create a low noise environment for you!

Mini and light, easy to carry around.

Ultra-quiet & 5-speed adjustable The hand-held fan is rechargeable, ultra-quiet, the 5-speed is adjustable(The fourth gear is the maximum wind speed), the wind speed is gradually increased from 1 to 4, and the 5-speed simulated natural circulation wind (Automatic cycle adjustment of wind speed).Ideal for outdoor activities, such as camping, hiking, or traveling.

Portable & Stylish Designed for on-the-go convenience, this cooling pad is portable and compatible with laptops up to 15.6 inches. The fan wind speed can be stepless adjusted, blue LED lights can let you know the fan are working

For Laptop tablet Wall with USB or port Can use for power supply.

Simple to Operate and Use First, stand up the bracket and open the front baffle and then adjust to the appropriate gear and put on the computer. Next, connect the heat sink to the USB of the computer and ultimately power on to dissipate heat. In addition, the included hidden phone holder allows for seamless multitasking

Type C interfaces, only devices with type C interfaces is supported

TypeC+Micro USB small fan, low power consumption.

3 Ultra-Quiet Fans Design Our TECKNET laptop cooler with 3 ultra-quiet fans up to 1200 rotations per minute, which can quickly cool down your laptop and keep your laptop running efficiently while playing games, while keeping the built-in cooling fan is quiet, excellent mute experience