The TMD-700A (G) DOES NOT have internal GPS as in the 710G, it has a port for a GPS to be attached! Any GPS with NEMA output with work! I have several Garmin and another company that work great! My favorites are theĀ  276C and 478C! When using a small handheld GPS, I use my laptop to see what's going on!

Sent from my Samsung Galaxy smartphone.

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