After years of eroding sales to established smartwatch players like Apple, Fitbit finally stepped into the arena with 2017's Ionic, but its delayed entry into the market found it behind the eight ball, lumbered with half-baked software and app partnerships which suggested it was (ironically) launched prematurely. Two years on, it looks like the company has been diligently working to iron out some of the quirks and have delivered one of their most well-rounded devices yet.

While the fitness tracking market has slowed down in recent times, Fitbit has worked rather aggressively to retain that market-leading position by pumping out annual hardware iterations and a steady stream of software and firmware updates. But last year's revision of the high selling Charge 3 barely tinkered at the edges and has seemingly reached the pinnacle of its potential. That's why the smartwatch concept almost certainly holds the future of the company's fortunes.