Detailed Product Description

Functions:
1) Phone calls:
With a displayer and SIM card, the driver can take phone calls to any telephone.
2) Information services:
With a displayer, the driver can read or send all kinds of messages from service
center or GPS devices
3) Function keys:
With a displayer, there're some programmable function keys for the driver to
operate
4) Voice prompt:
At the state of over a fixed speed running, when you receive the assignment
information or operate to the buttons and menus in the displayer, there's always
voice prompt to show the operation has completed.