Usb fans for phone in comparison

COOL USB CLOCK FAN Upgraded version design, which combines the clock and fan into one, meeting your two needs at the same time. Adjustable design, time can be adjusted.

L M H Switch Voltage 3.5 4.2 5V; Air volume 3.5 3.88 4.4 CFM, Rotating speed 4000 4600 5300 RPM, choose suitable speed level according to different cooling needs. Noise level is 25.6 dB (weak) up to 32.5 dB (strong)

Fast heat dissipation, low power consumption, provide better use feeling.

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

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

Desk and Lap Use The laptop fan cooling pad has a big size base. The oversized base can increase the force-bearing area, even if you put the heavy laptops on your legs with the laptop cooler pad, you can use it comfortable and stably. You can use it everywhere such like lap, sofa, bed, desk...

You can also use a USB male to Type C female adapter or USB to USB female adapter to this fan,then to Powerbank or PC also can work(adapter is not included)The cell phone must with otg function Check OTG? Download app "USB OTG Checker").

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

The mobile phone radiator is an external fan device that blows air directly at the back of the mobile phone to increase the air flow on the back of the mobile phone,so that the heating elements inside the mobile phone are reduced.The Smartphone Fan cooler are designed at a small shape that will not disturb your fingers during gaming, allowing you to use the entire surface of the smartphone with ease.

Rapid Cooling Efficiency Experience exceptional cooling performance with the magnetic phone cooler, designed to quickly reduce your device's temperature within seconds. This rapid cooling capability helps prolong your phone's lifespan and maintain optimal performance during intensive tasks. Whether you're gaming or using resource-heavy apps, the phone cooler ensures your device remains cool and efficient.

EVEN AIR FLOW The 4 blades allow for an even flow of air, quickly and effectively cooling your space. Perfect for your desk, nightstand, side table, kitchen counter, workstation and so much more. And, thanks to it's compact and portable design, you can take it wherever you need to go.

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