Locator keys. Track Bluetooth. Activity monitor and device real-time tracking, anti-lost keychain, smart search, Ttag tag, compatible with Iphone and Android. Real-time GPS tracking and free Google Maps. Works based on the GSM / GPRS network and GPS satellites, positioning accuracy of up to 10 meters, this tracker can be placed or monitored any remote target at any time by short message service (SMS). 4 ways to track at any time: using web server / mobile phone APP / send SMS to track. Instantly track the location of lost pets, kids, cat and dog wallets, children, the elderly, or stolen vehicles. Operating distance: about 75 feet (without barrier) Battery: CR2032 lithium button battery (does not include a CR2032 battery) 7 standby time: 6 months, net weight: 9 grams English language Type: Portable.