I have had it for less than a month, and I have already taken a 10-day trip with a mini van in Crete.
I have used it quite a bit, and I continue to use it at home as a second fan.
Its performance is quite good, if you have it relatively close to you, at a distance of about 2 meters, you feel it very well at high speed.
Its rotation is silent, but the fan itself makes noise at high speed (much lower than conventional ones, of course).
The battery at high speed (4th) and with rotation lasts for over 5 hours.

Two negatives:
- The quality of the folding arm (it has a plastic casing that seems very delicate).
- It does not stand well when you tilt the arm.

I have not tried the power bank function that its battery has.

Performance:
- It is surprisingly powerful for its size.
- 4 air flow speeds (quite powerful).
- Fan rotation: 120 degrees.
- Battery life with the 8000 mAh battery is at least 10 hours on the 2nd speed.
- One USB-C input for charging the fan and one USB-A output for charging other devices.
- 2-year warranty.

Charging:
- Charges with the included USB-C cable.
- When charging, there is no battery level indicator. It only has a red light that turns green when fully charged.

Noise due to vibrations:
- It is not audible up to the 2nd speed. It starts to be audible at the 3rd speed.
- It also makes a lot of noise from the shaking when operating with its telescopic handle extended.

Attention BEFORE PURCHASING:
- Test it for unwanted vibrations when using it at maximum speed and with the column fully extended!
- Make sure you have clear access to the USB-C charging input (it is the thin input).
- Be careful with the carrying strap as the two screws holding it may come off.
- It has many moving parts besides the fan mechanism, so I recommend caution when opening and moving the device with how much intensity and force.
- For more efficient cooling when lying down, prefer to place the fan in a position that cools the legs first, which are usually the points of direct heat dissipation.

- Merry Treismas Band

First encounter with the product and I am very satisfied! Quite powerful for its size and a quality product. Time will tell.