Squale Watch T-183 Blue T183BL. Squale introduces the T-183, a series fully made in DLC. Squale watches have decided to introduce carbon, a highly resistant and extremely light material.  The case 42mm is composed of alternating layers of carbon fiber and fiberglass. Carbon is naturally black while the combination of black and coloured fiberglass highlights the beauty of the case. Water resistance is guaranteed up to 600m. The metal components, bezel, screw down crown and caseback are coated in DLC, which is more resistant than PVD. The bezel insert is made of ceramic and the triangle at 12 o clock emits a blue glow in the dark.