Visitation and child smart watch?

So my boyfriend has his kid for Christmas for a week. His mom dropped him off yesterday we noticed that he had a watch on. Turns out it’s a kids smart watch and my boyfriend is upset because he’s been voice texting his mom and calling her on his watch. We looked into what it has and it has GPS on it. Is she spying on where we go? My boyfriend took it away.
Visitation and child smart watch?
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