Review on FUNME Hands-Free USB Personal Fan - Green Necklace Fan with 3350mAh Battery, Up to 17 Hours of Use, Rechargeable & Portable, 3 Speeds, Foldable Design, Soft Light - Ideal for Outdoors, Travel, and Indoor Activities by Kris Martin

Love that you can adjust it. You can change the speed. What I didn't like the most was that the battery was dying faster and faster every day. and I've only had it about a week and it seems like the blades have stopped spinning cold air. They keep turning, but no cold air comes out of the blades.