As a starting point let's take a closer look at the Portable AC Cooler with 3 Speeds and Humidifier.
This 3 in 1 Portable USB Mini Air Conditioner Fan is designed to cool and humidify the air in small spaces. Its adjustable vents and LED power indicator make it easy to use and monitor.

When put to the test the Portable AC Cooler performed well in terms of its cooling and humidifying functions. The principle of the air conditioning fan is that the water in the water tank is pumped to the add water to set, large capacity water tank. When used, it is matched with drops of essential oil. It comes with three adjustable speeds, although some users found the second and third speeds to be too loud. The standout feature of this product is its portability which allows it to be used anywhere with a USB port.

It's worth noting that while the Portable AC Cooler provides a good cooling effect it may not be as effective as a traditional air conditioner. Additionally, the water tank will need to be refilled every few hours, depending on the speed used. However, the addition of a humidifier function and the ability to add essential oils make this product versatile and enjoyable to use.

To sum up the Portable AC Cooler with 3 Speeds and Humidifier is a useful product for those looking to cool and humidify small spaces. While it may not be as powerful as a traditional air conditioner, its portability and additional features make it a worthy purchase. In my opinion, if you need a compact and convenient way to cool and humidify the air around you, the Portable AC Cooler is definitely worth considering.