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 130 hours, saves 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 children and the 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 wristband, and the third gear can be adjusted. Carrying - The mosquito repellent wristband can be worn on the wrist, you can connect it to the backpack, stroller for more convenience , waterproof, and will not affect your daily life.