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GPSMAP 64st features a 2.6" sunlight-readable color screen and a high-sensitivity GPS and GLONASS receiver with a quad helix antenna for superior reception. GPSMAP 64st includes a 3-axis electronic compass with barometric altimeter, wireless connectivity.
GPSMAP 64st has a built-in 3-axis tilt-compensated electronic compass, which shows your heading even when you're standing still, without holding it level. Its barometric altimeter tracks changes in pressure to pinpoint your precise altitude, and you can even use it to plot barometric pressure over time, which can help you keep an eye on changing weather conditions.