Aurora Black Shark employs a 43.5mm case. The strap of Black shark is made by Thailand imported rubber functions greater water and corrosion resistance, which ensures longer longevity; meanwhile, dealt with extra length design enable the watch’s comfort while wearing on the diving suit. Embraced by the case is a Black Dial. People are prone to be more yearn for brightness especially in darkness. Black shark applies super-luminova to finish the lume dots are capable to last 10 hours, can clearly and accurately read the time even in deep sea. Screw-in crown makes the movement shape a sealed cabin to isolate seawater out of the case. Black shark equips enlarged and deeper fluted screw-in crown ensure greater water-resistant whilst characters a smoother and antiskid operation for a watch under seawater. Rotational bezel helps the wearer better master the time under seawater to ensure the underwater adventure goes successfully.