Simply power on the ultrasonic mosquito repeller and clip it onto your body or belongings. A single press of the button gets travel mosquito net working instantly to shield your area. After only one hour of charging the mosquito killer, you receive a full day of continuous protection. The included USB power adapter works with various power sources such as computers and power banks. Whether you're indoors at home or enjoying outdoor activities like camping and fishing, this insect repellent outdoor offers protection in every setting, including offices and other commercial spaces.