All you need is Electronic compass in device.
You can filter devices with this component:
eTrex® Touch 25 is the cheapest but it have a less rugged sensor screen.Code:Please Login or Register to see the links
eTrex® 30x is compact and it have the control buttons what is similar for your device.
GPSMAP® 64s is bigger but it have front-end control buttons.
All of it have the readable color screen and they support satellite images if you need in that. All of they have the modern built-in 3-axis tilt-compensated electronic compass that shows your heading even when you’re standing still, and you don’t have to hold it level to get an easy-to-understand display of your heading.



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