Balancing silver with black tones, the Invicta Men's Subaqua Noma Collection Black Ion-Plated and Stainless Steel Chronograph Watch is an exceptionally durable deep-sea watch. This Invicta timepiece offers a stainless steel band enhanced by black-ion-plated stainless steel. A rugged, black-and-silver-tone stainless steel bezel with screw-down accents frames a black dial. Sporty-looking push pieces and a prominent crown add to the bold design of this Swiss-quartz-powered watch. A black dial offers three subdials, silver-tone hour indicators with luminescent tips, white stick minute markers, and a date window at the four o'clock position. Silver-tone skeleton hands complete the stylish mix of silver-and-black tones. This watch presents in a handsome yellow Invicta gift box and is water resistant to an impressive 1640 feet (500 m). Subaqua CollectionLed with expert engineering, and always ready to face the depths, no feat or occasion will ever be too great for InvictaÃÂ¢??s Subaqua to handle. The sheer magnitude of this mighty timepiece is superbly executed with surgical-grade solid stainless steel, Swiss automatic movements, and multiple color options of ionic plating. Managing up to 500 meters of water, finished off with a unidirectional rotating bezel, integrated shock resistance, and InvictaÃÂ¢??s luminous Tritnite? hands, the Subaqua is the diverÃÂ¢??s definitive in negotiating any adventure by sea or by land. Screw Down Crowns: Many Invicta watches are equipped with a screw down crown to help prevent water infiltration. This is most common on our Diver models. In order to adjust the date and/or time on such a watch, you must first unscrew the crown before you can gently pull it out to its first or second click stop position. To do this, simply rotate the crown counterclockwise until it springs open. When you have finished setting the watch, the crown must then be pushed in and screwed back in tightly. Not doing so will cancel the water resistance of the watch and will void all warranties from the manufacturer. Overall, this process should not require a lot of effort or force.