[CHEMICAL-FREE]: Fly fans completely use physical means to keep flies bugs away cover food and drinks. So we can enjoy a conversation over an outdoor meal without swatting flies all the time. (Not applicable to fruit flies, gnat) | [LONG TIME WORKING]: When we are preparing for outdoor activities such as camping, picnic or fishing on weekends, we often need the fly fans to be able to work continuously for at least 10-20h, Don't worry! Adawook rechargeable fly fans can last up to 18 hours or more after a full charge. It has a built-in lithium battery that can be recharged and used on a recurring basis. | [USB FLY FANS]: When there is no electricity, pluging usb cable can be used fly windmill immediately, and our conversation with friends will no longer be interrupted by flies. | [EASY STORAGE] : This fly fans for outdoor tables rechargeable are collapsible, it can retract for storage. So that we will save space in our backpacks and easy to carry. | [SOFT BLADES]: Shoo away Fly fan blades are made of ABS+PP material. The fly repellent stops automatically when a foreign object (e.g. fork, hand) actually touches the fan blades. It's not a sensing mechanism, it needs to be touched.