Omega Seamaster Diver 300M Co-Axial Master Superclone Chronometer 42mm Titanium Mesh Bracelet 210.90.42.20.01.001.

 It is made with the same materials and to the same specifications as the genuine watch, except for the movement, which is a cloned movement instead of the genuine Omega Master Chronometer movement.

Here are the specifications of the watch:

Movement: 1:1 Superclone Omega Master Chronometer Movement
Case: Grade 2 Titanium
Case Diameter: 42mm
Case Thickness: 13.15mm
Dial: Brown Dial with Vintage Super-LumiNova
Bezel: Black Ceramic Bezel with Date Window
Crystal: Sapphire Crystal with AR Coating
Strap: Titanium Mesh Bracelet with Deployant Clasp
Water Resistance: 300 Meters

The watch is powered by a 1:1 Superclone Omega Master Chronometer movement. This movement is based on the genuine Omega Master Chronometer movement, but it has been modified to be more accurate and reliable. The movement is also COSC certified, which means that it has been tested and certified to meet the highest standards of accuracy