The Garmin External GPS Antenna comes in a sturdy, compact, and water-resistant casing, providing an excellent boost in performance and an array of installation options. For those with GPS mounted inside a vehicle, especially in a cab with limited sky visibility, it's highly recommended to use this external antenna.

• 9.8 ft (3 m) long cable
• Water resistant
• 10 mHz updates 10x per second
• Compatible with Garmin Tread XL GPS units when used with the Locking Magnetic mount or the Baja Dock.