Review on Stay Cool Anywhere with the Portable Neck Fan - USB Rechargeable, 360° Rotation, 3 Adjustable Speeds by Craig Kumar

Be careful if you have long hair. makes an awful noise when something gets near the blades (like hair or even part of your shirt), doesn't fit well around your neck and when you move to do something (that's why you get hot and you need a fan ), the noise occurs quite often and will slide to the side. This is very powerful with only a 1st parameter. I usually never turn it on the highest setting because it's so strong that it scares me a little when it's that close to my face.