The Garmin 17X is a WAAS capable DGPS receiver that provides 1-3 meter accuracy* . This unit comes packaged with custom wiring configuration with power/serial cable, antenna extension pole, 24 hr. battery pack with charger, 3 year warranty on cables, batteries and antenna. A Forester's Backpack or blaze Orange Vest is included with this system. We recommend this unit for forestry applications under heavy tree canopy and for all other GPS applications where sub-meter accuracy isn't required.