Necklace / Anti-Mosquito wave necklace

According to WHO, About six hundred twenty thousand and seven thousand people were died from malaria in 2013. Some of these deaths occurred in Africa located at 0 to 20 degrees latitude, especially children under the age of five. However, now it is harmful for health to use DDT spraying and insecticide-treated mosquito nets.
But, It is not only eco-friendly but also available enough for developing countries to use Wave accessory since power can be self-generated using solar cells.