Waterproof Ultrasonic Mosquito Repellent Bracelet, Rechargeable Mosquito Bite Prevention Bracelet for Outdoor Sports (White)

Smart energy saving: The repellent watch is rechargeable via a portable USB port and features a smart chip for efficient energy saving.Simply press the switch to activate it, and the blue light will indicate its operating status.Scientifically supported principle: Taking advantage of the natural behavior of mosquitoes, where female mosquitoes (leeches) avoid male mosquitoes during their egg-laying period, this mosquito repellent bracelet mimics the sound of male mosquitoes, offering a scientific approach to repelling pests.