Tracker Key Finder. Simply attach this Bluetooth item finder tracking device onto your keychain, wallet, bag, pet or bike and with a free smart phone app download, you can track your item.Simply attach this item finder onto your K/C, wallet, bag, pet or bike and with a free smart phone app download (called iTracing), you can track your item anywhere (the trackers will ring and directions will display on your phone).If you lose your phone, simply double tap the button on the tracker and your phone will ring to reveal its location. Using Bluetooth®4.0 technology, these tracking devices are compatible with Apple 7.0 devices or later and Android 4.3 devices or later. Each comes packed in an illustrated gift box with instructions.Range is 80 feet. Batteries are included and replaceable.