10000mAh battery operated clip on fan
The fan comes with multiple power supply options.
You can either power it via a USB cable, USB-C or batteries. Even a cell phone adapter can be used for charging the battery present in the fan.
The multiple power supply options make it extremely convenient for a treadmill, study room, quiet office, library, outdoor travel, home, bedroom, kitchen, games room, rv, camper, van, golf cart, traveling, fishing, camping, hiking, backpacking, BBQ, picnic, biking, boating, and so on.