They come with 'WorldMap type' detail in your third of the world and an even more basic (if this is possible) map for the rest of the world.
On bikes or 4WDs I would go for the GPSmap 60Cx and save yourself a little money.
The CSx has an electronic compass and pressure based altimeter.
The compass will give you a direction when stationary and
the pressure based altimeter will give you a height accurate to 3 metres (after calibration).
The Cx compass needs you to be moving to give a direction (slow walking pace or faster) and
a GPS based height is accurate to 20 metres.
The GPSmap 60Cx has a longer battery life.
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Burnie M
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