Bo-Camp says about the Vliegen Verjager Ventilator
A handy ventilating fly repellent. Ideal for chasing away flies and other insects, both indoors and outdoors. The ideal solution for a barbecue or a picnic. The propellors have reflectors that scare the insects, keeping them away. The fly repellor is lightweight and the built-in Li-ion battery can be charged with an included USB cable.