HuntGold 1X Mini Portable Anti-Lost/Theft Key Pet Luggage Bag Bluetooth Tracer Finder Device(White) Battery: CR2032 Lithium Coin Battery(Battery Included) Standby time: about 6 month Size: about 5cm*3.2cm*1cm(L*W*H) Color: white Package content: 1 * Anti-Lost/Theft Device