Before first use, Charge the mosquito rack at or 2-3 hours To Charge the mosquito racket, switch it off and connect the USB cable inicio Slide power switch to "T"position, from the "O" position, then press the working switch button above the power switch, the working indicating light will turn on, high voltage will star to flow through the intermediate metal grid. Wave the mosquito racket when a mosquito or bug connects with the metal mesh, a loud zapping sound would be heard and mosquitoes or bugs will be killed Put the racket on the base, slide the power switch to " " position, the working indicating light will turn on, and connect the USB cable(included) to any USB device or adapter the purple LED will be lighting on attract the mosquito according to its habits. Mosquitoes will fly to the purple LED and be killed automatically by high voltage in the intermediate metal grid.