“It’s not only [very slightly] smaller and sleeker than before: the Casio Pro Trek WSD-F20 is also smarter. The watch is tailor-built for use in the great outdoors with a ruggedized case and includes a digital compass, altimeter, barometer, and for the first time a low-power GPS with downloadable maps. You’ll have to settle for viewing maps on its 1.32-inch color display which is also touch-enabled, but fortunately the WSD-F20 runs Android Wear 2.0 with a user-friendly interface — not to mention Google Assistant for quick voice-powered commands. And when you’re not relying on its full capabilities the watch can switch into timepiece mode on its secondary monochrome display (there are two stacked layers) to extend battery life from…” (via )
