Casio, too, is hopping on the Bluetooth bandwagon with its forthcoming GB6900, but its connected watch will retain the same display as current G-Shocks, relying on its paired partner for more mundane tasks such as automatic resetting of time depending on the time zone and alerts for when the watch gets out of range from the smartphone, hinting that one may have left it behind.

ENGADGET: Switched On: The watch and the workhorse