FeaturesThe anti-mosquito bracelet is made of safe materials, environmentally friendly, non-toxic and safe to use. The strap is designed with holes and is highly flexible for all ages.Mosquito Repellent Bracelet is colorless, odorless, chemically free, mimicking the wings of male mosquitoes, resisting female mosquitoes, and scientifically designed to promote your life.The anti-mosquito bracelet is very lightweight and durable, so you can carry your bracelet with you, so that you can say goodbye to those nasty mosquitoes and provide you with long-term protection.USB charging, durable to use.Anti-mosquito bracelets have a wide range of applications for outdoor and indoor, sit-in fishing, parks, summer camps, hiking, and to prevent those annoying mosquitoes. This is the best gift for family and friends.Specifications:Product Name: Ultrasonic mosquito repellent braceletFunction: Ultrasonic mosquito repellentApplicable age: 3 years old or olderWaterproof: waterproofInput: 5V/1AOutput: 34HZ-70KHZBattery capacity: 90mAHCharging time: about 30 minutesLife time: 130 hoursThe principle of mosquito repellent: the bracelet rings to imitate the sounds of female mosquitoes, such as the sound of male mosquitoes and cockroaches, to achieve mosquito repellent effect In nature, blood sucking are female mosquitoes, and they are all in the stage of. Conception, in this price range, Female mosquitoes will avoid male mosquitoes and avoid secondary pregnancy. So the sound of male mosquitoes can reach the mosquito repellent effect.Features:. Pure physical mosquito repellent, not chemical repellent, safer, more assured, more environmentally friendly, healthier Old people, children, pregnant women and pets can be worn Products can be worn indoors and outdoors (seaside, park, camping, hiking. , fishing).Package Contents:1* mosquito repellent bracelet1*USB cable.