Features: 1 anti lost, when the phone with the anti - drop device beyond the default effective distance, two-way automatic alarm, search the owner to prevent lost (used in the elderly, children, pets, etc.) 2-way search, mobile phone forget to take? Side by two under the anti drop device, mobile phone alarm, where the children go? Press the phone APP in the call, the anti drop device alarm, along the sound point to retrieve 3 remote control, easy to control the phone remote camera