Guardian is a child safety smart bracelet equip with the latest Bluetooth 4.0 technology. We carefully choose the best and safest material for a kids and eco friendly product. It is anti-irritation, water resistant and very light in weight. Designed to be an extra hand for parents to ensure the protection can be more effortlessly.Parents can link the Guardian with their smartphone and set up a safety range with the BeLuvv application. System will automatically notify you when the children wandering off the set distance.