1. Bluetooth connecting, Bluetooth v4.0 EDR communication protocol could connect 4 anti-lost devices at the same time. 

2. Powerful function, both-way junction(smartphone & anti-lost devices could control each other). 

3. Extraordinary working hours, our devices can work for about 6 months by a 3V CR2032 button battery power supply, don't need to replace the batteries frequently. 

4. Intelligent alarm, when the anti-lost device exceeds the set Bluetooth range, the mobile phone and the anti-lost device will alarm at the same time; when the anti-lost device is disconnected ,the map location can be checked on the mobile phone. 

5. Anti-nuisance function, it can be set to mute for a certain period to prevent interruption during work and other important times;

The product APP can be downloaded for free by scanning the QR code or finding iSearching in the Apple/Android system store.