New, with battery included. ※ Supports iOS and Android 4.3 or later (Bluetooth 4.0 required). Download the "iSearching" app from the App Store or scan the QR code included in the manual to download the software. ※ Product Description This is a convenient small tool that alerts you when you're about to forget your belongings. Pair it with the dedicated app and keep the app running in the background. When the key tracker and your smartphone disconnect, both will sound an alert. Ideal for travel and preventing loss.