Samsung just started mass-producing the Exynos 7 Dual 7270, the first mobile processor designed for wearable devices that is built on the 14-nanometer FinFET process technology. But Samsung has been using the 14nm technology since 2015.
http://www.notebookcheck.net/Samsung-Exynos-AP-14nm-FinFET-SoC-Lineup.179986.0.html