Wryst is redefining the classic black sports watch. With 200 meters water-resistance, sapphire crystal, durable black DLC coating, and world-class Swiss Made signature, the ULTIMATE collection is aptly named. Produced in small series of 99 pieces. The 45mm bold looking watch has CNC machining deep engravings "WRYST" on both sides of the case. References Ultimate ES20 all-black, Swiss military ES30 black/green, ES40 black/yellow, carbon fiber ES60 black/red have a screw-down crown, square buckle, and casing protected by DLC* coating technology (*Diamond-Like Carbon). This hard coating is the world's most shock resistant. Wryst offers quality Swiss outdoors watches produced in small series.