Casio's interesting PRO TEK WSD-F30 smartwatch is is now shipping for $549 (note: affiliate link to Amazon). The PRO TEK is an Android Wear OS deviec that sports a round 1.2" round 390x390 AMOLED display with a monochrome transparent LCD on top that can be used to conserve battery life (up to a month with wireless off). The watch features a MIL-STSD-810 certification, GPS, Bluetooth and Wi-Fi.

Casio PRO TEK WSD-F30 photo

Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters