Review on 🔋 JISULIFE Handheld Fan - 4800mAh Powerbank, Up to 46 Hours Runtime, Portable and Foldable, USB or Battery Operated, 3 Speeds, Enhanced Airflow, Rechargeable and Quiet Mini Fan (White) by Elaine Ross

Almost every feature was great except for one. Although it was fairly quiet at first, it got louder every week. I've only had it a month and the noise at all speeds is too loud to use in anyone's company. Very disappointing. UPDATE: I contacted the seller to see if there was anything they could do about the growing noise and they very quickly offered to send a new one. They stand behind their product! Impressive customer service! UPDATE 2: The replacement has also started making noises that aren't due to turbulence. Seems to decrease when the fan spins sideways. This indicates a problem with the motor mounting in the housing, causing the motor to be misaligned or otherwise slightly loose during normal use, causing vibration and noise. I assume a small design and/or manufacturing improvement could fix this. (Minus 1 star for this mistake.)