Step tracking is pretty much as good as it can get, battery life is great, and with
the exception of the heart rate monitor, it's a great all - around fitness companion.
It retains the curved - corner rectangular design
of the Apple Watch Series 2 and original Apple Watch, roughly the same weight and dimensions (with the
exception of a crystal at the bottom that's.25 mm bigger), and the same fitness - tracking
heart rate monitor, accelerometer, and gyroscope sensors.