Feature: 1. Compact size. 2. With SiRF StarII/LP Low Power Chipset. 3. Built-in active antenna. 4. High sensitivity to satellite signal . 5. 12 Channels "All-in-View" tracking. 6. Superior urban canyon performance. 7. Foliagelock for weak signal tracking. 8. Support NMEA 0183 V 2.2 protocol. 9. Supported command, GGA, GLL, VTG, RMC, GSA, GSV. 10. More position fixes in an urban canyon or dense foliage environment. 11. Built-in super capacitor to reserve system data for rapid satellite acquistion. 12. Easy plug into with your NoteBook PC or PDA. 13. Super-cohesive magnetic for mounting on the car. 14. LED indicator for GPS fix or not fix. 15. non-slip on the buttom.