Intelligent Sound Wave: Our tick repellent for people will bring high power and effectiveness. This bug repellent outdoor is based on physical principles and uses electronic simulation technology to drive away mosquitoes and insects. The mosquito repeller can emit various sound waves that can stimulate the brains of mosquitoes and insects so mosquitoes and insects cant tolerate those sound waves for a long time. They will be far away from these areas. Safe for Humans & Pets: The ultrasonic pest repeller indoor is non-toxic, free odors and chemicals protect the area around you. This insect repellent outdoor with special safety ultrasound does not affect normal life. To be made from ABS safety flame retardant material, the mice repellent is environmentally friendly and non-polluting for long-term use. Easy to Use: You will set up the ant repellent indoor in a few seconds, just turn on the tick repellent and hang it in a suitable place on your body or other devices. With one-button to start, the fly repellent will protect your area automatically. Say goodbye to fleas, cockroaches, mosquitoes, mice, spiders, ants, and other insects. Energy Saving: The spider repellent can be charged for one hour and take care of you all day, be equipped a with USB power adapter, computer, and mobile power, The electrical radiation level of rat repellent is far lower than the industry standard, safe to use, and long-term work. The frequency is 50Hz. Portable flea repeller: The ranger ready insect repellent is super small and lightweight so it can follow you everywhere. This rodent repellent indoor ultrasonic will be suitable for many application scenarios such as indoors, outdoors, traveling, camping, fishing. Material: ABS, Size: 5 * 5 * 1.35cm. USB charging can repel fleas, cockroaches, mosquitoes, mice, spiders, ants and other Kunchong without causing harm to the human body