Feature: 1. Multi Function: Ultrasound repellent band can monitor heart, sleep, blood pressure, provide weather and time display, call and message reminders, music play and other functions. 2. Smart Wristband: Ultrasound repellent bracelet has a variety of functions, not only repellent function, but also has a variety of sports, health and leisure functions, which is a comprehensive smart bracelet. 3. Prevent Sting: Ultrasound repellent band is safer and healthier to use physical repellent instead of chemical repellent, which can effectively prevent you from sting. 4. Wide Application: Repellent watchband with better waterproof performance, can be used at summer, outdoors, camping, fishing, hiking, sports, barbecuing, etc. 5. USB Rechargeable: Outdoor repellent watchband adopted USB charging design, which built in 80mAh battery, after full charged can be used for about 150 hours. Specification: Item Type: Ultrasound Repellent Bracelet Material: Plastic Battery Type: 1 x Rechargeable Battery Battery Capacity: 80mAh (Included). Package List: 1 x Repellent Host1 x Wristband1 x Charging Head1 x Manual