Garmin gpsmap 64 worldwide high sensitivity gps glonass receiver GPS

Garmin GPSMAP 64 Worldwide with High-Sensitivity GPS and GLONASS Receiver Rugged, Full-featured Handheld with GPS and GLONASS Combined 2.6" sunlight-readable color screen High-sensitivity GPS and GLONASS receiver with quad helix antenna 4 GB of internal memory and a microSD™ card slot 250,000 preloaded caches for paperless... Garmin GPSMAP 64 Worldwide with High-Sensitivity GPS and GLONASS Receiver