" Product characteristics: 1. Object search function: Link the anti-perceiving device to valuables. When the device is connected to the Bluetooth mobile phone application, use the application search function to ensure that the anti-lodging device is making a sound, to find the item. 2. Find the mobile phone function: when the device is connected with the Bluetooth mobile phone application, when you have to find the mobile phone, double-click the device button to call the mobile phone And that the mobile phone will make a sound. 3. Bidirectional alarm: adjust the Bluetooth disconnection alarm switch to the software to make bidirectional anti-fires. When the device is connected with the Bluetooth mobile phone application, if the mobile phone is disconnected from the Bluetooth anti-perceiving device, both The mobile phone and the anti-perceiving device will emits an alarm sound, and the mobile phone of the item will be lost, and an alarm will be recalled. 4. Selfie function: When the