For commercial purposes, it is generally multi-person and intensive work, easy to manage, the body is strong and loud and the standby time is long, and the operation is simple.  

It is used by management-level personnel, with an additional one-click button, which is different from ordinary phones. It has a complete functional operation interface, which can be used for monitoring, watching the map and observing the location of the other party. It has the function of recording calls...

It is fixedly installed on the vehicle and can be equipped with a hands-free device. The sound is loud. It does not need to install any antenna. It only needs a power supply. It is easy to operate. Equipped with a GPS external antenna, 4G system is the highest frequency, upload data every 5 seconds, accuracy High, different from the general GPRS/2G system.

Compatible with all devices Linux, I-OS, Andriod, I-pad, Winpad, Windows PC is simple and convenient to use, which is different from the general system that is only used as a walkie-talkie.
-This system provides customers with platform management rights. The content is confidential and can be trusted by commercial customers