I sweat A LOT (so bad I know). I go to the gym 3 days a week. But the equipment in my hall has been changed, and the new equipment has no fans. So I bought that. The air flow is sufficient. To help me stay dry. But not the sweat fee. It is not audible at high speed in the gym. The clamp hole is not as wide as I would like. But there is a place on the machines at my gym to strap them on. Your hardware may be different. For a quiet, efficient battery fan, this works. After using my 3 weeks. I bought another one for my son. I trained it for two hours without charging in between. I haven't fully discharged it yet, so I can't say how long it will last on a single charge. I am happy with this fan.
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