Cons: Noise: While not overwhelming, this fan is definitely too loud to use in a quiet environment. Performance: Even on the highest setting, you won't feel a thing if you're evenly 1 foot away Durability: The plastic cage around the fan is relatively thin and probably won't stand up to rough handling Pros: Very light: It feels as heavy as one Ladies wrist watch and I stopped noticing the weight after just a few minutes. cool and refreshing: As long as you hold it very close, it can cool you down quite a bit. New: Honestly, how many people have a watch fanatic? most efficient mini fan. However, it's oddly perfect for the occasional hike when you want to cool off a bit during your break but don't want to fiddle with your bag or handheld fan.