The Apple Watch succeeded in converting me from a smartwatch skeptic to an Apple Watch convert, but I held out on upgrading until the Series 3 came along. There were two reasons that persuaded me to upgrade – improved Siri performance and the automatic monitoring of heart-rate, my Series 0 being the only model in the line-up not to support the latter.
I wrote before the launch of the Series 4 that there were likewise two reasons that would persuade me to upgrade again – and we turned out to get both of them …
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