I really like this personal fan. The lanyard and dual belt clips allow for multiple setups.
My original plan was to hook it to the collar of my V-neck polo shirt using only the belt clips. Unfortunately, my undershirt got in the way. But attaching the lanyard to my neck in conjunction with the belt clip allowed me to blow air from the top of my collar to my chest.
I tried to clip the fan next to my belt buckle, but since I am a bit rotten at my belly, it did not push airflow past my stomach. When I attach the fan to the side of my belt and stuffed my shirt into extra belt clip, it worked like a charm.
Since no one has the exact same body shape, there will be a learning curve. But once you get it figured out, this little fan packs quite the punch for its low price.
The 40 hour runtime claim is also accurate. I used it on the highest setting for about five hours and still had 89% battery left.
I would highly recommend this device.