will tomtom chagnge from mph to kmh automatically when i go to southern ireland?

Walshmefc
Walshmefc Registered Users Posts: 4
Apprentice Seeker
Hi everyone, im going to southern Ireland on my motorbike and i have the TomTom 550 and just wondering will it know that the country its in is kmh not mph or is there a way i have to manually change this? TIA

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