https://izhongchou.taobao.com/dreamdetail.htm?id=20084252&
This one
Probably not at $81,000+
Beidou is a GPS-like satellite positioning system, it would not work as a repeater for user data. Nice that the units can position themselves without depending on a phone, but that’s all.
Beidou navigation system can send short messages, similar to mobile phone short messages. You can go through the official information, and the service is already commercially available.