Pacoco Anti-lost Children Smart Watch GPS Tracker Bluetooth Wrist Watch with GSM Pedometer,Communication,Remote Monitor,SOS Button for IOS Android Smartphones(Green) A key to SOS distress: in an emergency, press the SOS button, namely to guardian sent a distress message. Remote monitoring,high sensitivity of the microphone,the users in emergency,the voice of the real-time monitoring equipment around. Double positioning: GPS satellites and dual monitoring base station positioning all real-time positioning tracking. Two-way conversations: users can call each other, can set up three affection real-time call number.Pedometer: steps to measure the user's walking. Electronic fence: equipment centered on the map drawn an area,the area of APP and short message alarm immediately.Historical trajectory.