Portable Mosquito Repeller USAGE: 1． The device imitates the sound of dragonfly wing`s vibration to drive all kinds of mosquitoes. 2． Press “I”, the sound will last for 2 minutes. Meanwhile, the red light will flash every one second. After 2 minutes, the red light will stop flashing. 3． Press “II” for the first time, the sound will last for 2 hours and red light flashing every one second. Second press, it will last for 4 hours and Third press, 8 hours. After fourth press, it will stop working.
