Specifications:The bracelet achieves the effect of repelling mosquitoes by imitating the sounds that female mosquitoes hate, such as the sounds of male mosquitoes and dragonflies.This is a pure physical mosquito repellent bracelet, which is safer, healthier and more environmentally friendly.It can be worn by the elderly, children, pregnant women and pets.You can wear it indoors and outdoors(sea, park, camping, climbing, fishing, etc.).Type: Anti Mosquito BraceletMaterial: SiliconeInput: 5V/0.5AOutput: 34Hz-70KHzBattery Capacity: 80mAh(Included)Charging Time: about 30 MinutesWorking Time: 150 HoursFeatures: Rechargeable, Safe, Good Effect, AdjustableNotes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Package Includes:1 x Anti Mosquito Bracelet1 x Charging Cable