- Compatible with iOS and Android: Works with Android 4.3 and higher (Bluetooth 5.0 required). Download the iSearching app from the App Store or scan the QR code in the manual. - Easy Setup: 1. Press the button for 3 seconds until you hear 3 beeps, indicating the device is on. The indicator will flash for 10 seconds. 2. Connect the tracker to your phone via Bluetooth. 3. To turn off, press the button for 3 seconds until you hear a long beep. Note: For Android users, open the GPS app before connecting. - Two-Way Anti-Lost Function: The smart key tracker alerts you when you might leave your belongings behind. Both the tracker and your phone will ring if they become disconnected. If your phone is missing, double-press the tracker button to trigger an alarm. You can also check the last known location on the app, which helps you locate lost items quickly. One phone can connect to multiple trackers. - Long Battery Life & No Monthly Fees: This key tracking device features an impressive standby time of over 6 months and is easily replaceable for long-term use. Its elegant design adds a touch of style, making it not just functional but also a decorative piece. Enjoy lifetime use with a one-time purchase—no recurring fees. - Versatile Use Cases: The key item locator is perfect for tracking frequently misplaced items. Attach it to your phone, keys, bags, umbrellas, or even your pets' collars. It provides peace of mind for your wallet, purse, luggage, and other essential belongings, ensuring you never lose track of what matters most.