Review on 🌬️ O2 Cool Fan: Versatile 8 inch Portable Fan with AC Adapter - Battery or Electric Operated for Indoor and Outdoor Use, 90 Degree Tilt Feature by Monica Satchell

Looks nice, makes a pretty good breeze for its size and seems quiet. One complaint is that you need a screwdriver to open the battery door, which is poor design. Also, the batteries were very tight and difficult to remove. Unfortunately I had to return it as the outside of the switch on the unit I received was broken (I had to poke in the slot with this screwdriver to turn it on). So can't say anything about long-term use. The season I need this is over so I haven't reordered, might try it on one of their fans next year when I read they have improved the battery compartment.