Ultrasonic Mosquito Repellent Bracelet - Smart Electronic Mosquito Repellent Bracelet, Quiet Ultrasound, Creating a Sound Barrier, Physical Principle Repellent, Non-Chemical Repellent, Safer, More Environmentally Friendly, Safer, Healthier, the elderly, children, and pets can be carried, portable, and carried indoors and outdoors.USB Charging and Reusable - Built-in aluminum polymer battery, charge for 30 minutes, work for 130 hours, save money and trouble. Sleek and lightweight, black and white, stylish and portable, with a soft strap.Safety Mosquito Repellent Bracelet - Made with safe materials, eco-friendly, non-toxic, safe, safe for kids and adults. Whether you are indoors or outdoors, our mosquito repellent bracelet protects you from mosquitoes.Adjustable function - The bracelet has three settings. Generally, it can be used indoors. Adjust a speed. In outdoor activities, set the second gear. It is the silent mode of the bracelet, and the third gear can be adjusted.Carry - The mosquito repellent bracelet can be worn on the wrist, you can connect it to the backpack, stroller for convenience, waterproof, and will not affect your daily life.