The Casio WSD-F20A still stands as of May, 2019 as one of the best Smart watches on the market. Casio offer the Smart watch for as low as $399. Don't miss out on your WSD-F20A, buy it now before it sells out.
That's not it though, Casio also offer G-Shock GBA800, WSD-F10, at fantastic prices. Compare them here.