O2COOLTreva 10-Inch Portable Desktop Air Circulation Battery Fan, 2 Speed, Compact Folding & Tilt Design, with AC Adapter (Graphite)

El aparato perfecto cuando deja la luz

Although it's plastic, it's a great unit. I like it because it's larger than most portable fans. I also like it because you can plug it in the wall, add batteries and charge it with USB cable. I plan on buying some recharageable batteries so i can use them over and over. It's easy to pick up and go because it folds up. Also, you can set it at many different angles, which is wonderful. It's so portable and easy to grab and go if you're going to the beach, working in the yard, going on a picnic or camping. My grandson used it when he spent a week with us and ran it all the time in his room. This is a great unit and has a lot of options.

Update 21Jun23 -- incredible machine, still going strong all seasons. Battery tip, since Amazon jacked their's so high in price, tried Dollarama's Panasonics, equal to the task and significantly cheaper.Update 14May22 D Size Adapter -- decided to return the adapters (noted below). Only got average four-to-six hours out of the AAs with adapters -- not worth the light weight and hassle changing so often. Get minimum 20 hours with Amazon gold D batteries, gone back to them.Update 25Apr22 -- Holy smokes, still going strong and definitely the best investment ever. Works fabulously with both AC and D Batteries. Recently bought a D Size Adapter that takes one AA battery and it also works great and is just a bit lighter-weight, although don't last as long as Amazon Basics gold D cells but alternative when you run out. (https://www.amazon.ca/gp/product/B076Q6SQM4/ref=ox_sc_saved_title_1?smid=A3P4UZIS42PRQV&psc=1). Now heading into warm weather and after working great through winter to help circulating heat it's now keeping me cool again. BTW, did buy a skinny paint brush to reach through grill to remove gunk from blades. After "brushing", tip and tap on the ground to dispose the gunk.Update 11Mar21 -- This is one of the best purchases I have ever made! It's still working VERY well with both AC and batteries in both cold (circulating heat from my camper van propane Mr. Heater) and hot weather to keep me cool. I can't imagine not having it.I have, however, found one thing that frustrates: it's solid one-piece plastic housing cannot be opened to clean the blades which are very, very dusty after more than two years of pretty much constant use. I've taken to using a 2-inch hair-rather-than-synthetic paint brush to try to clear the outer housing rings as much as possible. Might next try a skinny artist's brush to reach through the rings to the blades.Update 03Jul20 -- amazing device! Working really well still with both AC and batteries. Used all winter to help move the heat around from my propane Mr. Heater, and now the weather is getting hot and humid again so am using it to keep cool. Again, this size is so much better than a 5 or 6 inch fan in a camper. Really, it's absolutely worth the cost.Update 22Oct19 -- still working fantastically! Using it now to help heat flow around the space. One of my best purchases!Original Review 2018With both power and battery capacity, this is a really good fan. With batteries installed, when you plug in power supply it auto-switches to AC and doesn't run down the batteries. Am using in a camper van, and when I have power it's "FANtastic", and when on batteries it still has very good power. So glad I got this instead of a 5 or 6 inch battery-operated fan; the large 10 inch size gives much more air circulation. The batteries work for around 5-6 days on low running it for 4-6 hours per day. I've found turning off for a couple of hours seems to restore the batteries so they run strong again for at least a half hour before slowing down again. Another thing I noticed is that when I do use on AC power, that also seems to restore the batteries and they run again really well -- don't understand that, but it's a bonus for me.

This is one of the best portable fans I have had. It simply is amazing and meets its puprpose and is a wonderful traveling fan. The best part is I orderd and got it shipped from US with in week inspite me being in Cochin where normal couriers take ages.I wanted this to be taken with me on my tour to Europe where we are doing quite a bit of home stays in the country side where most homes don't have A/C or fan and in recent years European summers have become hot (temp in Spain was 39 degrees) and i have had bad experiences in the past as well, hence we decided to take a fan. Straight away knew the cheap Chinese fans (already having extremely poor reviews on amazon) would not be enough. After a long search finally found the O2-Cool series of fans.Not only it proved to be extremely useful it was also super light weight and did not add on to our overall weight limit in a bad way.Special mention of the company Ganapathy Global who sold it cheaper then many other sellers but also promptly responded to my email request for delivery within a week as I needed it for my travel and it came ahead of the time they promised.Please note: This product is for travel or to be used in close proximity and recommend using a light weight extension cable than buying the heavy and expensive rechargeable battery's (unless you are camping).

Absolutely excellent for blackouts you wouldn't possibly regret it