FOBO TAG 3 works with world's first tracker (FOBO TAG) with Bluetooth 5 and multiple patented technologies. It provides five smart and powerful ways to retrieve missing items or to stop loss, removing the LOST from "Lost & Found". A qualified smart phone is required, which is either iOS (7. 1 or later) or Android (4. 3 or later) based and with Bluetooth 5 or 4.