GPS gprs module of high Performance, Low Price 1. ... 3.Size:20.0*28.0*3.2 mm GPS gprs module with Low Price, High Performance, International Approvals, Prompt Delivery, ... meters, DGPS corrected. 4).Time 1 microsecond synchronized to GPS time. 5.Datum:Default:WGS-84.6.Acquisition Rate ... : 1).Two full duplex serial communication, TTL interface, with user selectable baud rate (4800,9600,19200,38400,57600 ...