Features: Connect to the device through the mobile APP. When you don\'t know where the wallet or key is, you can click the alarm button in the APP, and the anti-loss device will sound an alarm. The location of the wallet or key can be found through the sound. Intelligent reminder, two-way anti-loss. Click the Alarm button on the mobile phone, and the anti-loss device will ring-the-alarm. Double click the control button on the anti-loss device, and the phone will ring-an-alarm. Open the APP-Camera, click the circular button switch, you can take a selfie, convenient and fast. Map location: 1. Loss history can record the position where the anti-loss device and the mobile phone finally lost connection. 2. Click the anti-loss control button to locate and record it in the positioning list.