The OceanX Sharkmaster GMT 40mm Automatic SMS-GMT-0522is a high quality watch. It pays tribute to diving watches of the present and the past, but does have key OceanX elements. Under the hood you will find an automatic, Japanese Seiko NH34 movement, which has a GMT complication. The glass is scratch resistant sapphire glass. The watch has an impressive water resistance rating of 500 meters. The uni-directional bezel has a 24 hour scale and scratch resistant certamic insert. The Oceanx Sharkmaster GMT Automatic is a phenomenal model with a very practical complication and that ticks all the boxes in terms of value for money, quality, finishing level and specifications!