The USB 2.0 GPS Receiver based on u-blox 6 SuperSense® chipset has a built-in antenna for high sensitivity.You can use this GPS Receiver with a notebook and a suitable routing software for navigation.Specifications u-blox 6 GPS SuperSense® high performance chipset Frequency: L1, 1575.42 MHz, C/A Code: 1.023 MHz Accepts the signals of up to 50 satellites at the same time Supports AGPS, WAAS, EGNOS and MSAS Supports NMEA 0183 protocols: GGA, GSA, GSV, RMC, VTG USB specification 2.0 Auto Baud Rate up to 115200 Update Rate: up to 5 Hz Sensibility max. -162dBm IPX6 protection class Magnatic, non-slip on the bottom LED-indicator for GPS-status Operating temperature: -20°C to +60°C Cold start in about 25 sec. Hot start in about 1 sec. Positioning accuracy: 2.5 m CEP (Circular Error Probable) and 2 m CEP with SBAS Dimension (LxWxH): 65 mm x 45 mm x 22 mm Cable lenght: 1.50 mSystem requirements Windows 98SE/ME/2000/XP/Vista/7/8, Linux ex Kernel 2.6 PC or Notebook with a free USB PortPackage contents USB 2.0 Receiver Driver CD User manual on CD ROM