You can clip this belt fan to your waist with the attached belt or directly clip it to your pants. You can also wear it as a necklace fan with the strap. Dual clips makes it more stable and comfortable to use. Built-in 6000mAh rechargeable battery supports up to 16 hours using. This battery powered usb fan is rechargeable via USB and can be charged with adapters, power banks, laptops, and car chargers. It eliminates having to buy batteries. Variable speed design provides you more choices in different weathers. And this portable personal fan is compact and lightweight, perfect for working, hiking, beach, fishing etc. This is not only a cooling fan, but also a charging block for your phone (micro USB cable provided). And wrapped with premium TPU material, our personal waist fan is shock absorption and fall-proof.