SEAMASTER DIVER 300M CO‑AXIAL MASTER CHRONOMETER 43.5 MM "Black Black" Rado Centrix Automatic Diamonds one using her trademark buckle

one using her trademark buckle on a double-length calf leather strap with alligator pattern debossing

The watch is presented on a stainless steel and 18K Sedna™ gold bracelet and is driven by the OMEGA Master Chronometer Calibre 8800

Longines is bringing this exciting heritage back to life with watches from its "Heritage Avigation" range

The blue strap is made from structured rubber and includes an additional 18K Sedna™ gold link which integrates it to the case

SEAMASTER DIVER 300M CO‑AXIAL MASTER CHRONOMETER 43.5 MM "Black Black" Rado Centrix Automatic Diamonds one using her trademark buckleDescription Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. OMEGAs 21st century models stay true to the originals dive watch design, while introducing exciting new materials and movements. On this 43. 50 mm model, black ceramic [ZrO2] dominates. The case, bezel, wave pattern dial, crown and helium escape valve, all in the same striking material, give the watch a very distinctive, uniform and sculptural look. To