- CFA compliant. - Within SiRF StarII/LP or X-Trac low power All-in-View high performance 12-parallel channels. - Support Standard NMEA 0183 command: GGA, GSA, GSV, RMC, GLL, VTG. - SingleSat updates in reduced visibility. - Superior urban canyou performance. - FoliageLock for weak signal tracking. - Optional external antenna. - Built-in active Antenna for high sensitivity to satellite signal. - Built-in super capacitor to reserve system data for rapid satellite acquisition. - lLED indicator for GPS fix or not fix.