1 Connect the mobile phone's Bluetooth, two-way search function, you can connect 7 anti-lost devices at the same time. 2 In the connected state, when the anti-lost device exceeds the set Bluetooth range, the mobile phone and the anti-lost device will alarm at the same time. 3 If the device is separated, you can view the map location on the phone. 4 Provide a non-interference function, which can be silent for a certain period of time to prevent the anti-lost device from controlling the recording function of the mobile phone when working, as well as remote selfies. 5 Control the recording function of the mobile phone through the anti-lost device.1*Anti-lost Tracke Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin