Apple aimed to stretch its lead in the smartwatch market when it introduced its Apple Watch Series 4 last week. The redesigned and re-engineered line features a bigger display, thinner and smaller case, an interface with richer detail, and some innovative health applications enabled by new sensor, accelerometer and gyroscope hardware. "Between watchOS 5 and what they revealed to us last week, there's a lot of cool things to like about this," said Ramon T. Llamas, senior research analyst at IDC.