The Master Carbon Seal Automatic has a 45 mm case made from Carbonox. This is a new composite material which is lightweight, hypoallergenic, weatherproof, shock and scratch resistant. This case houses a Swiss automatic Sellita movement for excellent precision. The watch has a distinct outdoor feel with its green rubber band and green details. Furthermore you can expect all the details that Luminox is famous for: durability, luminosity, water resistance and readability.