Amazon.com: Garmin GPSMAP 66s, Handheld Hiking GPS with 3” Color Display and GPS/GLONASS/Galileo Support (Renewed) : Electronics
Garmin® refreshes its popular handheld GPSMAP® series, introduces larger display, Galileo support and expanded battery life with tracking up to one week - Garmin Blog
GLONASS, Galileo, BeiDou and QZSS | What it is and when to use it
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