Features:   
Frequency: 1575.42MHZ
Voltage: 3.0-5.0V
Size: 3.9 x 5.0cm
Cable Length: 2, 3m or 5m (Approx.)
Water resistant
The antennas contains a high performance GPS patch antenna and a high-tech low noise amplifier
Provides excellent signal amplification and out-band-rejection for the receiver
Mounting: Magnetic base           
GPS External Antenna - Low noise signal amplification, Magnetic base, water resistan
7 feet:
$12.95                                  10 feet: $18.95                              17 feet: $24.95