[One-click Search] Bluetooth Key Locator Alert Double tap on the button on the app will make your phone beep, the key finder helps you to quickly find any misplaced item without wasting time. [Bluetooth Connection＆Range] Anti-lost key finder connects to your phone bluetooth and finding app, and can map the location of your car keys to help you find items with a range of more than 100 inches. [Long Battery Life＆Support] The smart key locator is powered by an extra replacement battery CR2032 can be replaced by simply rotating the flip cover on the back, each battery can last for 10 months, and it is easy to replace when the battery is depleted. If you have questions about remote trackers, please contact us. [Compatibility] Ultrs-light no burden tracker supports iOS system and Android 4.3 or higher (requires Bluetooth 4.0). You can download the "Searching" App from the App Store, or scan the QR code attached to the manual to download the software. [Portable＆Convenient] Mini Key Tracker is a miniature tracking device with a compact and cute design, GPS tracker device can be used as a wallet finder easy to carry and attached to a key ring or other frequently lost items to guide you to find.