Casio Men's OCEANUS Manta S6000 Series Solar Radio Bluetooth-Enabled Slim Case with Sapphire Bezel OCW-S6000-1AJFProduct Highlights Imagine a color reminiscent of the deep blue sea, where a beautiful blue with transparency can be enjoyed from every angle. The watch features a blue black gradient coating, achieved through multiple layers of evaporation and sputtering processes, creating a complex and captivating hue. The bezel is finished with scratch resistant sapphire glass for long lasting brilliance. The city codes are laser engraved for added functionality.