Garmin gpsmap 440 用户手册
GPSMAP 400/500 Series Owner’s Manual
Getting Started
Getting Started
Unit Overview
GPSMAP 536/546
POWER/
BACKLIGHT
MENU
ROCKER
SELECT
HOME
RANGE (-/+)
MARK
SD card slot
Power/Data
GPSMAP 546 shown
External GPS antenna
NMEA 2000
GPSMAP 531