As a very crude rule of thumb, when buying a wearable, you have to prioritise serious fitness tracking (think Garmin, Coros, Fitbit, etc.) or smartwatch features (Samsung, Google, Mobvoi, etc.). Yes, there’s a bit of overlap between the best smartwatches and best running watches, but running watches lack the smarts and looks of smartwatches, while smartwatches generally lack the accuracy and/or detail to appeal to serious runners.