Smartwatches for children are entering a new phase of technology. The ability to make video calls via the watch not only provides convenience, but more importantly, better parental control. A mobile watch for children has many advantages. It's always with them, they can't lose it and it ensures that parents can stay in touch with their child. The model accepts SIM cards from all operators and has a built-in speaker/microphone. You can discreetly listen to the background noise around your child to make sure everything is OK. This is one of the parental control functions offered by a children's smartwatch with SIM card.