The OceanX Sharkmaster GMT 40mm Automatic SMS-GMT-0502 is 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 aluminium 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! Specifications Movement Mechanical Calibre Seiko NH34 GMT Hacking Yes Power reserve 40 hours Hand winding Yes Automatic Yes Glass Sapphire crystal Date Yes Width (without crown) 40mm Thickness 14.5mm Lugs 20mm Lug to lug 48mm Water resistance 500m Dial Brown Bezel type Unidirectional Bezel material Aluminium Crown Screw-down Coating PVD Yellow gold Case material Stainless steel Band material Stainless steel End links Solid Caseback Solid Warranty 2 years