At a suggested retail price of just $120, the GPS 310 is the first entry-level GPS receiver that is waterproof, floats and offers the accuracy of a 12-parallel-channel receiver with communications capability. It features data output capabilities, making it compatible with most popular PC navigation software, and accepts real-time correction data (differential GPS) to provide accuracy within five meters. The GPS 310 records as many as 100 of your favorite locations and one reversible route with up to ten legs. Two AA batteries provide up to 20 hours of continuous operation. Magellan, San Dimas, CA; (909) 394-5000.