Smart tracker for keys: Key finder uses Bluetooth 4.0 technology to connect with Android, iOS, iPad, and other smartphones. Shows the distance to lost items such as car keys, luggage, wallet, dogs, or cats on the app, helping you locate them accurately. The 5-pack smart tracker set includes black, green, blue, pink, and white. Easy to operate: Download the free iSearching app and pair it with your smartphone. Press the remote button on the app to make the tracker emit a beeping sound, audible within 30–49 feet. When connected via Bluetooth, the device can act as a remote shutter button for your phone’s camera, making it easy to capture moments. Ultra-low power design: Equipped with a replaceable CR2032 button battery. Compact and lightweight: The key finder smart tracker is small and portable, ideal for attaching to a keychain, a child’s schoolbag, or a pet’s collar. Real-time location tracking helps prevent loss of items, children, or pets. The app provides a last seen location pin on the map to assist in recovering lost items or locating your car in a parking area.