🌷🌷🌷Ultra thin Key Finder - Wopin key finder is a tracking device for anything and it is only 0.11 inch (2,77 mm) thin,8g weight.Our bluetooth tracker can easily fit into a wallet, credit card holder, bag, key,PC and anything. It is a good gift for those who always forget something.

🌷🌷🌷Bi-directional Finder - Item Finder - When you can't find the key or wallet, open GoFinder app and click the bell icon in the app,this key finder will ring and lead you to find. Phone Finder - If you don't know where is your phone, double press the button on this key finder, your phone will ring even when it is on silent or vibration.(Make sure connected and keep GoFinder app opened).

🌷🌷🌷Anti-Lost Alarm - Both your phone and key finder will beep last about 10 seconds to alarm you when the item finder is out of range or disconnecting, so you don't have to worry about missing something you need(this function could be turned off in setting.).Usually the range with Bluetooth is around 10-12m indoors and 20-50m outdoors.

🌷🌷🌷See It on a Map - Smart finder support for iOS & Android phone, you can download the GoFinder app on Apple Store or Google Play.The app will records the last position where the phone and the item were last disconnected and narrow the searching scope, so you can open the map in the App to speculate approximate location of your missing items. Then click the bell icon in the app to ring the finder.

🌷🌷🌷Replaceable battery - Low power connection with bluetooth, button-battery CR2016 can be replaced, can be used for about 6 months. Sleep mode is more energy efficient. The battery level can also be seen on the app. You can contact our customer service for any quality problems.