If you're lucky, it won't leave you stranded on a hike.
Bluetooth-enabled, and capable of syncing with several fitness apps. Could this be the just-smart-enough smartwatch?
We wouldn't rely too heavily on the G-Shock's flakey atomic-clock-signal reception, but otherwise, it makes for a fine rugged watch.
The Casio Smart Outdoor Watch, or WSD-F10, is a big tough watch for people who enjoy the outdoors and want to stay connected.