Luxury version of caliber 8901 - finished to be fitted in watches made of precious metals. First Omega movement to bear the 'Master Chronometer' seal, indicating that it successfully passed the new METAS certification process.
All watches using this caliber:
22.214.171.124.03.001 Omega Seamaster Planet Ocean 600M Co-Axial 43.5 Master Chronometer Sedna Gold / Blue / Strap
126.96.36.199.02.001 Omega Seamaster Aqua Terra 150M Master Chronometer 41 Sedna Gold / Silver / Bracelet
188.8.131.52.13.001 Omega Seamaster Aqua Terra 150M Master Chronometer 41 Sedna Gold / Brown / Alligator