I bought this fan for my streaming studio because it gets very hot and I need air movement. I haven't been disappointed yet. On its lowest setting, the fan is quiet enough not to be picked up by my mic and lets in enough air to keep me cool. On the highest settings, this thing moves some serious air and is surprisingly small, but a tad noisy. When connected via USB, the fan runs constantly, which is very pleasant. As far as I can tell, the advertised battery life is pretty accurate. Overall I'm very happy with it and even use it occasionally when I'm sleeping due to the white noise and airflow.
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