HumminbirdAS GRP Precision GPS Receiver,

AS GRP provides fast and precise position fixes accurate within 2.5 meters, even in lower signal areasProvides more accurate position fixes than the industry standard GPS.Power draw:28 mASeries: 1100, 900, 800, 700fast position fixes accurate within 2.5 metersmore accurate position fixes than the industry standard GPS3.25 inch diameter, 1.5 inch...