Garmin GPS devices are handheld or mounted navigation units that use Global Navigation Satellite Systems (including GPS, GLONASS, Galileo) to provide accurate positioning for outdoor activities, field surveys, and scientific research. Standard handheld Garmin units (e.g., GPSMAP 65, eTrex 32x) typically achieve 1–3 m accuracy, suitable for most fieldwork applications. Advanced models support multi-band GNSS for improved precision in challenging environments (e.g., dense canopy, rugged terrain)