GPS receiver module of high Performance, Low Price 1.Chipset:SiRF star ... sec. 3.Size: 20.0*24.3*3.0mm GPS receiver module with Low Price, High Performance, International Approvals, Prompt Delivery ... sec., average. 7.Dynamic Conditions: 1).Altitude : 18,000 meters (<60,000 feet) Max 2).Velocity:515 m/s (<1,000 ...