Sunrain Gf-21 Mini Gps Tracker Voice Activated Recorder Audio Recording Device Wifi/gsm Real-Time Voice Monitoring You can listen to the audio sounds in real-time through this voice recorder, or activate the auto-recording, which will record and store in the cloud 15 seconds each file. ^Multiple PositioningThis new version tracker or locator has a more powerful positioning function than the GF-07, GF-09, GF-19 model which can work with GPS, GSM, LBS and WIFI, such as remote control, one-button searching, step counting and so on. ^About SIM CardThe GPS supports Speedtalk GPS tracker SIM/ T-mobile 2G SIM/ GMS 2G Card, supports 32G memory card. The device does not contain a SIM card and memory card. ^Positioning Query You can check the users specific location through the mobile app or computer whether it is brought by children, the olds, in the bag or in a car, you can find them easily as soon as possible. ^ Use Precautions1. If the positioning is inaccurate, please restart the device; 2. If it fails to start normally, please charge it for 2 hours and try again; 3. If you cannot get the data, please restore the warehouse settings and restore the factory settings-send a text message: 1122 Restore factory password-send SMS: pwrst