Omega caliber 864
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864 description
Chronometer-rated version of caliber 861. Available with yellow plating (1992, engraved 863) and rhodium plating (1994). Although inscribed with '17 jewels' the movement has 18 jewels.
All watches using the Omega 864 movement:

3692.30.31
Omega Speedmaster Professional Moonwatch Apollo XI 25th White Gold

3192.30.00
Omega Speedmaster Professional Moonwatch Apollo XI 25th White Gold Bracelet

3194.50.00
Omega Speedmaster Professional Moonwatch Yellow Gold / Black / Bracelet / Jubilee Chronometer

3694.50.00
Omega Speedmaster Professional Moonwatch Jubilee Chronometer