Omega Speedmaster Moonwatch Professional 42 mm Omega and is driven by the

and is driven by the manual-winding OMEGA Co-Axial Master Chronometer Calibre 9906

while the helium escape valve has been given a conical design

The lightest version of the DEFY 21 1/100th of a second El Primero chronograph

Water resistance: 600 bar (6

this 42 mm Moonwatch

Omega Speedmaster Moonwatch Professional 42 mm Omega and is driven by theThe Speedmaster Moonwatch is one of the worlds most iconic timepieces. Having been a part of all six moon landings, the legendary chronograph is an impressive representation of the brands pioneering spirit. Inspired by the 4th generation Speedmaster, this 42 mm Moonwatch, with case and bracelet in 18K Moonshine Gold, has a sun brushed 18K Moonshine Gold "step" dial with blackened subdials and indexes. The black ceramic bezel ring, with OMEGA Ceragold