Smart ultrasonic Mosquito Repellent Bracelet

Drive midge principle: bracelets through imitates the sound of the female mosquitoes dislike, such as the voice of the male mosquitoes, dragonflies, drive midge effect.
In nature, the vampire is the female mosquitoes, and conception are spawning period, in this price segment, female mosquitoes will avoid the male mosquitoes, avoid secondary conception. So the simulation can achieve the sound of the male mosquito repellent effect.
Product features: pure physical mosquito repellent, not chemical repellent, safer, more assured, more environmentally friendly, more healthy.