Features: This sonic wristband prevents mosquitoes from biting without producing harmful chemicals, odors or smoke. Eco-friendly, non-toxic, these wristbands are super comfortable and flexible to wear. Fully adjustable to fit all shapes and sizes. Safe for babies, help to protect them from being bit by mosquito or other insects. Lightweight and durable, you can wear them anywhere or take them with you on your travels. Smart USB charging drive mosquito bracelet, a bracelet to let you worry-free through the whole summer, farewell to mosquito troubles. Whether you are camping, fishing, hiking or parks, shopping, smart mosquito repellent bracelet is the perfect helper to keep away from mosquito.