With the help of the cable, you can save the batteries of the Garmin device by connecting the device to a 12-volt cigarette lighter. Includes replaceable 1.5 amp fuse. Compatible devices: Show Approach® G3 Europe Approach® G5 Europe Approach® G6 Approach® G7 Colorado® 300 Dakota® 10 Dakota® 20 eTrex® 10 eTrex® 10 with Geocaching Accessory Pack eTrex® 20 eTrex® 20x eTrex® 22x eTrex® 30 eTrex® 30x eTrex® 32x eTrex® Touch 25 eTrex® Touch 35 GPS 73 GPSMAP® 62 GPSMAP® 62sc GPSMAP® 64 GPSMAP® 64p GPSMAP® 64pc GPSMAP 64sx GPSMAP 64x GPSMAP® 65 GPSMAP® 65s GPSMAP® 78 GPSMAP® 78p Montana® 600 Montana® 600 Moto and City Navigator Europe Montana® 610 Montana® 650 Montana® 650t Montana® 680 Montana® 680t MonterraOregon® 300 Oregon® 400t Oregon® 450 Oregon® 450t Oregon® 550 Oregon® 550t Oregon® 600 Oregon® 600t Oregon® 650 Oregon® 650t Oregon® 700 Oregon® 750 Oregon® 750t