Engadget Review

The Series 2 is the best smartwatch you can buy, but it's not the best sports watch. Even with the waterproofing and built-in GPS, it's best if you think of this as a fitness tracker -- albeit, a very stylish, feature-rich fitness tracker. The pace calculations are often incorrect, which will annoy athletes training for events where speed matters. Walkers, hikers and recreational users might be less bothered. Even so, the Series 2 is similar enough to the cheaper Series 1 that most people won't have enough of a reason to buy the more expensive model. You'd have to either be a swimmer, or just keen on the idea of tracking your miles each day.