master 38Shop for Speedmaster Chronograph Automatic Black Dial Men's Watch 324.30.38.50.01.001 by Omega at , see price in cart.Seamaster Aqua Terra 150M 41 mm, Sedna™ gold on Sedna™ gold. Co‑Axial Master Chronometer Small Seconds 41 mm. 9 ; Seamaster Aqua Terra 150M 38 mm, steel on steel.