I bought this watch because this watch can be used with sim card. Most smartwatches do not have this capability. This watch uses Android OS that works well. There is no difficulty when I install a sim card. I immediately get TMobile signal after installing its sim card. All the other features are also useful to me, especially the health-related features since I often wear it when I jog. Overall I am satisfied with my purchase and would recommend it as well.
I get it at:
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