1.   GPS (Global Positioning System) 

Allows the device to determine and report its precise geographic location (longitude and latitude) in real-time.

2.   Recording

The function to record audio, either from conversations or the environment. This can include recording both sides of a conversation.

3.   Positioning

The system that utilizes GPS to track and monitor the location of the device and its user on a digital map. This is often managed through a backend platform.

4.   Geo-fence

A virtual geographic boundary. The administrator can set up allowed or restricted areas on the map. The system will generate an alert (e.g., send a notification) when the device enters or exits these predefined areas.

5.   SOS

An emergency function. By pressing a dedicated SOS button, the device immediately sends a distress signal along with its current location to pre-set contacts or a monitoring center, requesting urgent help.

6.   Voice-features

The device uses synthesized voice to announce status, such as power on/off, channel switching, low battery, etc.