Review on 💨 Stay Cool Anywhere with KEYNICE 5000mAh Battery Operated Fan – Auto Oscillating, Intermittent Wind, Ultra Quiet & Portable for Bedroom, Office, Golf Cart, Treadmill, Car, Stroller! by Kiesha Cepparulo

I was pleasantly surprised by the high quality of this product! I've been looking for fans to circulate the air for my houseplants and seedlings. It fit the bill perfectly and was the best of several fans I've tried. It's so good I've bought more to replace other fans! It's just perfect for my rather specific needs - I mount them upside down on shelves. Some fans make noise in this position, but not in this one! It is very quiet and the automatic circulation function works absolutely silently. The random fan speed mode is a new and useful idea, and it just looks good. You can tell someone spent a lot of time designing this thing - even the front grille is slightly curved in a way that's hard to see but subtly adds to its charm. I've never tried to control it when it's offline. AC adapter, so I can't comment on battery life.