Color of anti-lost tag: Random color packaging of anti-lost tag: 2 × anti-lost tag product description maybe you often forget where your key, wallet, pets, bag But now, you will out of this trouble, you will find your lost items easily by our anti-lost tags. This smart finder Bluetooth locator pet tracker alarm wireless anti-lost sensor tags connect your smartphone with Bluetooth wireless, both of them will alarm when your phone out of your tags more than safety distance (10-15m). And it will marked the last point in the map, you just launch the app you will get the location, no matter how far you leave. Just download the free app we provide, it can running at your android or IOS devices, then you can sync in seconds. You can connect multiple tags simultaneously and a range of settings for distance alerts which are easy to use. Compatible devices: Android: Which support Bluetooth 4.0 with 4.3 or above system version. Example: Samsung galaxy s6 edge / s7 edge / note 3 / note 4 / note5 and newer google nexus 4/5/6+ and newer more Apple iOS: For IOS 7 and above iPhone 4s and above iPod touch 5th gen iPad 3rd gen / mini / air and newer battery: Cr2032 lithium coin battery.